Relevant bibliographies by topics / Second order conditioning

Academic literature on the topic 'Second order conditioning'

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Published: 6 September 2023

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Journal articles on the topic "Second order conditioning"

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Hennevin, Elizabeth, and Bernard Hars. "Second-order conditioning during sleep." Psychobiology 20, no. 2 (June 1992): 166–76. http://dx.doi.org/10.3758/bf03327177.

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Tabone, C. J., and J. S. de Belle. "Second-order conditioning in Drosophila." Learning & Memory 18, no. 4 (March 25, 2011): 250–53. http://dx.doi.org/10.1101/lm.2035411.

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Witnauer, James E., and Ralph R. Miller. "Some determinants of second-order conditioning." Learning & Behavior 39, no. 1 (September 24, 2010): 12–26. http://dx.doi.org/10.1007/s13420-010-0002-6.

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Winterbauer, Neil E., and Bernard W. Balleine. "Motivational Control of Second-Order Conditioning." Journal of Experimental Psychology: Animal Behavior Processes 31, no. 3 (2005): 334–40. http://dx.doi.org/10.1037/0097-7403.31.3.334.

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Jara, Elvia, Javier Vila, and Antonio Maldonado. "Second-order conditioning of human causal learning." Learning and Motivation 37, no. 3 (August 2006): 230–46. http://dx.doi.org/10.1016/j.lmot.2005.12.001.

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URUSHIHARA, Kouji. "Classical backward conditioning in second-order conditioning in rat's conditioned suppression." Japanese Journal of Animal Psychology 50, no. 1 (2000): 27–31. http://dx.doi.org/10.2502/janip.50.27.

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Helmstetter, Fred J., and Michael S. Fanselow. "Differential second-order aversive conditioning using contextual stimuli." Animal Learning & Behavior 17, no. 2 (June 1989): 205–12. http://dx.doi.org/10.3758/bf03207636.

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Craddock, Paul, Jessica S. Wasserman, Cody W. Polack, Thierry Kosinski, Charlotte Renaux, and Ralph R. Miller. "Associative structure of second-order conditioning in humans." Learning & Behavior 46, no. 2 (November 3, 2017): 171–81. http://dx.doi.org/10.3758/s13420-017-0299-5.

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Pineño, Oskar, Jessica M. Zilski, and Todd R. Schachtman. "Second-order conditioning during a compound extinction treatment." Learning and Motivation 38, no. 2 (May 2007): 172–92. http://dx.doi.org/10.1016/j.lmot.2006.08.004.

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Mowrer, Robert R., Douglas E. Krug, and Stephen B. Klein. "Backward Second-Order Conditioning in Flavor Aversion Learning." Psychological Record 38, no. 2 (April 1988): 259–69. http://dx.doi.org/10.1007/bf03395022.

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Dissertations / Theses on the topic "Second order conditioning"

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Truxell, Eric M. "Assessment of ethanol reinforcement through operant and second order conditioning during infancy an ontogenetic perspective /." Diss., Online access via UMI:, 2007.

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Mills, Kathleen Darby. "Auditors' inherent risk assessments: The relationships among task experience, inferability of conditioning information, second-order uncertainty and extent of testing." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/185998.

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Comparisons between experienced and inexperienced auditors have indicated that differences in knowledge which interact with the environment result in performance differences (Frederick and Libby 1986; Libby and Luft forthcoming). Experienced auditors' recognition of and reaction to variations in relevant conditioning information for inherent risk assessments have important implications for the efficiency and effectiveness of an audit. In addition, previous research concerning subjective probability has indicated that, contrary to the theory's requirements, actual individuals have imprecise degrees of belief (Ellsberg 1961; Gardenfors and Sahlin 1982). This impression in degree of belief results in individuals having second-order uncertainty about first-order probability assessments. This study extends previous research by providing evidence concerning a knowledge effect in the inherent risk assessment task, by considering the effect of the inferability of the conditioning information and by providing exploratory evidence concerning the relationship of first- to second-order uncertainty. Second-order uncertainty, in this context, is an auditor's uncertainty about a first-order inherent risk assessment. Inferability is a dimension of audit evidence which depends on auditors' internal knowledge structures. Their knowledge enables them to infer alternative values from other information to replace values that would be inferred from conditioning information that is unavailable in the current audit evidence set. The current experiment involved responses of 210 experienced and inexperienced auditors from KPMG Peat Marwick who assessed the inherent risk of a continuing manufacturing client. Subjects were assigned to the experienced group if they had experience with five or more inherent risk assessments. Inexperienced subjects had no experience. The data were analyzed as a 2x3 analysis of covariance. The between-subject independent variables were experience and inferable conditioning information. The dependent variable was second-order uncertainty. Inherent risk assessment was a significant covariate. The results indicate that when inferable conditioning information was relatively complete, experienced auditors had significantly lower second-order uncertainty than inexperienced auditors. The interaction of inferability of conditioning information and experience was marginally significant. However, the first-order inherent risk assessments indicate that experienced auditors have higher assessments when second-order uncertainty is low.
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Yeh, Shu-ming, and 葉紓銘. "The Influences of Prior Attitude, Brand Personality and Situational Context on the Image—Evidence on Second-Order Conditioning." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/43236709247686874074.

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碩士
義守大學
管理學院碩士班
97
According to the past literature, the brand personality can not only represent someone''s personality, but also change the images. Besides the brand personality, the past research pointed out that the situational context has an impact on the image. However, in our daily life, most of things and people are familiar to us, and we have certain attitude toward them. The prior attitude affects the images. The study used a 2 X 2 X 2 experimental design to investigate the impact of prior attitude (high excitement 卅low excitement), brand personality (high excitement 卅low excitement) and situational context (high excitement 卅low excitement) on the image. The results showed that the prior attitude, brand personality and situational context all have a significant main effect on the perceived excitement image. Prior attitude and brand personality have a significant interaction on the perceived excitement image. The consistency between prior attitude and brand personality would enhance the brand owner''s image of perceived excitement. The brand personality and situational context also have a significant interaction on the perceived excitement image. When the brand personality and situational context are consistent, the brand owner''s the perceived excitement image is stronger than when they are inconsistent. However, the prior attitude and situational context haven''t a significant interaction on the perceived excitement image. In addition, the prior attitude, brand personality and situational context have a significant interaction on the perceived excitement image.
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McPhee, Janice Elizabeth. "Latently inhibited stimuli are weakened in their ability to serve as blockers and second-order reinforcers in Pavlovian fear conditioning." 1998. https://scholarworks.umass.edu/dissertations/AAI9909188.

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The ability of a preexposed (latently inhibited) conditioned stimulus (CS) to serve as (a) a blocker or (b) a second-order reinforcer in Pavlovian fear conditioning was tested in albino rats. Experiment 1 found that a preexposed CS was weakened in its ability to serve as a blocker. Experiment 2 found that a preexposed CS was weakened in its ability to serve as a reinforcer for second-order conditioning (SOC). Experiment 3 found that a 28-day retention interval between the last trial of element conditioning and the first trial of the SOC test did not enhance the ability of the preexposed CS to serve as a reinforcer for SOC, even though it did enhance the ability of that preexposed CS to evoke a first-order conditioned response. Experiment 4 was undertaken in an effort to show a contextually dependent attenuation of LI by employing a context shift between preexposure and element training. However, no attenuation of LI was found. Experiment 5 successfully demonstrated an attenuation of LI by reducing familiarity with the preexposure context prior to CS preexposure, reducing the amount of CS preexposure, and by using 100% reinforcement of the target CS during the first two days of the element training phase. Experiment 6 found that conducting stimulus preexposure and the test for blocking in different contexts did not enhance the ability of a preexposed CS to block conditioning to a neutral CS. Results are interpreted as supporting a learning-deficit view of latent inhibition.
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Tu, Jun-wei, and 涂峻瑋. "A Study of Applying Second-Order Conditioning Theory on the Effects of Multiple Endorsements by Celebrity – Perspective of Match-up between Celebrity and Products." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/30808710673878762945.

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碩士
雲林科技大學
企業管理系碩士班
99
In the past years, majority of studies which related to celebrity endorsement usually focused on the advertising effectiveness of different fitness between the celebrity and product. According to Match-Up Hypothesis, the higher fitness between celebrity and product, the greater advertising effectiveness it would generate. Therefore, study 1 applied classical conditioning theory to investigate the mechanism that underlying the match-up hypothesis. In addition, most of the celebrities had ever endorsed multiple brands. Accordingly, study 2 applied Second-Order Conditioning theory to inspect whether the pre-exposure of celebrity endorser would affect the advertising effectiveness. This study also based on feedback effects theory to investigate the influences of multiple endorsements by celebrity in different fitness. Study 1 adopted experimental design to examine the impacts on the attitudes toward brand of nonconditioning and conditioning(control condition/treatment condition) and also preexposure and none nonpreexposure. The study is 2×2＝4 factorial design. Study 1 involved 182 experimental subjects, and the results which analyzed by ANOVA showed that conditioning and preexposure have significant interaction. Consequently, study 2 adopted MANOMA to analyze the data. The result showed that the attitude toward brand would be higher through the process of classical conditioning no matter preexposure or not. Study 2 also adopted experimental design to examine the impacts on the attitudes toward brand and celebrity of the fitness between celebrity and former endorsed product (high fit/low fit) and also the fitness between celebrity and latter endorsed product (high fit/low fit). The study is 2×2＝4 factorial design. Study 2 involved 150 experimental subjects, and the results which analyzed by MANOVA showed that the fitness between celebrity and former product would influence the attitudes towards brand and celebrity. Furthermore, study 2 revealed that the attitudes toward brand and celebrity would be better while the celebrity both endorsed high fit former product and high fit latter product.
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Singh, Aditya. "Neural Correlates and Behavioral Underpinnings of Remote Memories during Systems Consolidation." Thesis, 2018. https://etd.iisc.ac.in/handle/2005/5346.

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Remote retrieval of declarative memories has been under investigation for a long time. After acquisition, long-term encoding of memories happens through crosstalk across multiple brain regions. Through systems consolidation, memory retrieval has been shown to become progressively less dependent on hippocampus and more dependent on cortex. During such processes, it has been observed that memories become generalized over time and their details are not recalled in their entirety. In contrast, modifications in training and testing protocol have been used to show that under certain circumstances, memories can be recalled in detail even after long time of encoding. At the same time, it has been shown that retrieval of memories results in memory updating in terms of enhancement or distortion. Although, the neural correlates and behavioral processes involved in such phenomenon are still being investigated. We implement behavior tests, lesion experiments and in vivo imaging to understand retrieval-dependent interactions between old memories and related new information, in terms of their elemental and configural nature. First, we establish a more sensitive behavior paradigm and analyses methods for social transmission of food preference task to investigate remote retrieval of relatively simple, hippocampus dependent non-spatial associations. We find that the retention and remote retrieval of such memories depends on the feature content information. Secondly, we test the role of feature overlap in detailed retrieval of remote contextual memories using contextual fear conditioning paradigm. We find that the specificity of remote memory is dependent on the testing order. At the same time, we find evidence for remote retrieval-dependent, second order conditioning (SOC) based new learning for ABC testing order and not for BAC testing order. Thirdly we perform timed hippocampus lesions for animal sub-groups tested in ABC order, to investigate acquisition and systems consolidation of SOC based new learning. We find that hippocampus is required for SOC based new learning and such memory can be retrieved if hippocampus is lesioned after ~4 weeks of acquisition. Surprisingly, we find that SOC based new learning undergoes rapid systems consolidation as it can be retrieved even if hippocampus is lesioned just after 24 hours of acquisition. Finally, we perform in vivo imaging of dendritic spines in RSC after acquisition of SOC based new learning and find that the increase in RSC spine density correlates with acquisition and early encoding of remote retrieval-dependent SOC based new learning
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Books on the topic "Second order conditioning"

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Rescorla, Robert. Pavlovian Second-Order Conditioning (Psychology Revivals). Psychology Press, 2014. http://dx.doi.org/10.4324/9781315768380.

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Rescorla, Robert A. Pavlovian Second-Order Conditioning: Studies in Associative Learning. Taylor & Francis Group, 2014.

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Pavlovian Second-Order Conditioning: Studies in Associative Learning. Taylor & Francis Group, 2014.

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Rescorla, Robert A. Pavlovian Second-Order Conditioning: Studies in Associative Learning. Taylor & Francis Group, 2015.

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Rescorla, Robert A. Pavlovian Second-Order Conditioning: Studies in Associative Learning. Taylor & Francis Group, 2014.

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Rescorla, Robert A. Pavlovian Second-Order Conditioning: Studies in Associative Learning. Taylor & Francis Group, 2014.

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Rescorla, Robert A. Pavlovian Second-Order Conditioning: Studies in Associative Learning. Taylor & Francis Group, 2014.

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Book chapters on the topic "Second order conditioning"

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Benzaquen, Samuel, and Carolina Chang. "Second-Order Conditioning in Mobile Robots." In Artificial Neural Networks — ICANN 2002, 844–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-46084-5_137.

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Rescorla, Robert A. "Pavolovian Second-Order Conditioning: Some Implications for Instrumental Behavior." In Operant-Pavlovian Interactions, 133–64. London: Routledge, 2021. http://dx.doi.org/10.4324/9781003150404-6.

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Tyszkiewicz, Adrian. "The Russian Narrative Construct towards Ukraine." In Information Security Policy: Conditions, Threats and Implementation in the International Environment, 83–97. Ksiegarnia Akademicka Publishing, 2022. http://dx.doi.org/10.12797/9788381388276.05.

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The article focuses on revealing various civilisational-cultural (‘Russian order’, triune Ruthenian nation, Moscow – third Rome), geopolitical (Ukraine as an axis of European stability, a fragment of the so-called “convergence zone”, with features of a zone disorganised by conflict and internal fragmentation – crush zone, the concept of Russia – island) and intrasystemic (totalitarian tendencies) elements of the Russian narrative message towards Ukraine of the time of the second, great aggression (2022). The article refers to the notion of totalitarian political gnosis as a product of totalitarian reality that justifies social mobilisation against an acknowledged hostile target – in this case, an independent, struggling Ukraine with the possibility of sovereign choice of development path. The analysis refers to the historical approach and the paradigm of critical geopolitics, deconstructing the narrative that contributes to geopolitical perceptions and the geopolitical image of reality. To substantiate the claim of a totalitarian political gnosis conditioning the official narrative, reference was made to Vladimir Putin’s speech on February 21, 2022, constituting the decision to aggress against Ukraine.
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Stolze, Radegundis. "Dimensionen der Subjektivitat beim Ubersetzen." In zeta-ppth, 77–99. Zeta Books, 2018. http://dx.doi.org/10.5840/zeta-ppth20184.

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The central idea of traditional hermeneutics is that a translator only transfers what he or she interprets as the text’s message. Modern philosophical hermeneutics, for its part, deals critically with what is conditioning the interpreter’s understanding of a text. In this regard, the focus is on the particular knowledge-base that constitutes the background of subjective understanding. In order to clarify the modern hermeneutical approach to translation, this essay discusses various dimensions of subjectivity. At issue, firstly, is the cognitive subject which takes charge of the translator’s reaching out into foreign worlds and specialist domains. Secondly, there is the existential subject: all translators live in a society and can learn about other modes of interpretation and rhetorical formulation, especially insofar as there is the possibility of being influenced by a given tradition. Thirdly, there is an individual subject informed by feelings and experiences which condition the translator’s linguistic creativity and motivate a certain deconstructionist reaction to texts. All three areas, this essay will argue, are constantly interlinked in understanding, translation, and writing.
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Conference papers on the topic "Second order conditioning"

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Krauskopf, John. "Psychophysical evidence of higher-order color mechanisms." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.thp3.

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A number of lines of evidence reveal the operation of higher-level mechanisms in color vision. By higher-order mechanisms is meant elements beyond the second stage of most conventional models of color vision (or in physiological terms elements beyond at least the LGN). Analyses of the changes in the detectability of chromatic pulses induced by prior viewing for fields fluctuating in color reveal that such mechanisms play a role in determining visual sensitivity. While retinal processes involved in sensitivity regulation appear to be highly localized in their effects, the higher-level processes have a wider scope. For example, fluctuating conditioning stimuli have effects, not attributable to stray light, on stimuli presented to remote retinal regions. Precise measurements of simultaneous color contrast yield results which cannot be explained in terms of multiplicative or subtractive interactions in either receptoral or second-stage mechanisms and thus imply a role of higher-order mechanisms.
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Yuill, David P., Nathan K. Redmann, and Mingsheng Liu. "Development of a Fan Airflow Station for Airflow Control in VAV Systems." In ASME 2003 International Solar Energy Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/isec2003-44022.

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A fan airflow station has been developed by the authors. This station is used to determine fan airflow using fan speed and fan head as inputs. These inputs can be measured accurately in variable air volume (VAV) systems, so they can be used as a cost-effective control monitoring method for heating, ventilation and air conditioning (HVAC) systems. Theoretical models have been developed for the flow station using both second and third order relationships between the airflow and the inputs. The theoretical model has been experimentally tested and excellent agreement between the model and the experimental values was found. The second order model was within 1.71% of the experimental values, and the third order model was within 1.52%. The second order model, which is much simpler, is considered adequate for use in buildings.
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Chan, Korey, and Saeid Bashash. "Modeling and Energy Cost Optimization of Air Conditioning Loads in Smart Grid Environments." In ASME 2017 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dscc2017-5284.

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Electricity for heating, ventilation, and air condition (HVAC) machines takes up a large percentage of energy consumption in the buildings and thus in turn, a large portion of the energy monetary cost. Optimization of air conditioners use throughout the day will reduce energy consumption and expenditure. This study introduces a second-order differential equation model to capture the indoor temperature dynamics of a building. An experimental test bed is developed to collect a set of indoor/outdoor temperature and sunlight data. Using a least-squares-based system identification process, the model parameters are identified and checked through simulation. Optimization of the room temperature is then determined by solving a mixed-integer quadratic programming problem in relation to the hourly-updated energy prices. Mixed-integer quadratic programming solution is compared to a two-point thermostatic control system. A hybrid solution compromising the quadratic programming algorithm and the conventional thermostatic control scheme is proposed as a tractable approach for the near-optimal energy management of the system.
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Nielsen, Niels F., and Leif Lind. "Applying CFD for Design of Gas Conditioning Towers With Swirling Flow." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1588.

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The aim of the present study is to investigate the gas flow distribution within a Gas Conditioning Tower (GCT) used for cooling hot flue gases by means of atomized water injection. Special focus is placed on developing a design that prevents wall flow separation in the evaporation zone as well as in the tower in general. In due cause a special swirler design is presented introducing the swirling type of flow in the tower (swirl no. in the range of 0.2 to 1.0). The GCT geometry studied includes inlet ducting, swirl generator unit, conical diffuser section and tower section. The swirler is a totally new design while the inlet ducts and conical diffusers studied are modifications of the traditional design. The three-dimensional flow distribution within the GCT is calculated by standard Computational Fluid Dynamical (CFD) tools giving high resolution of the calculation domain. The presented results include intensive validation studies of the swirling flow introduced by the swirler and practical applications. The validation case shows that medium mesh resolution, second order upwind difference scheme and the high Reynolds number form of the standard k-ε turbulence model with the law of the wall representation offer a good compromise between accuracy, required number of computational cells, computer time and agreement with experimental data. Studies of practical applications include design flexibility in general, optimization of gas distribution and sensitivity to water droplet size. Depending on the actual parameter in play, the results clearly demonstrate, that the newly developed design reflects the needs of an acceptable gas distribution in GCTs and that the design can be used in other flue gas process units including large opening angle diffusers. Also, the study indicates that the swirl number is a good measure of optimum operation.
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Alpuche, Mari´a G., Irene Marincic, Jose´ M. Ochoa, Hugo C. Moreno, and Paloma Giottonini. "Thermal Analysis of Low-Cost Dwellings in Mexico Using Greenroofs." In ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54610.

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According to the National Energy Balance (1), the electricity consumption in the residential and commercial sector represents thirty-three percent of the total consumed in the country. Most of the energy is consumed during the summer, when it is necessary to use air conditioning to maintain comfort conditions inside buildings. This aspect takes relevance in warm-dry climates, where a deficient design of building envelope and a wrong location of windows can increase the thermal loads producing an extra load to air conditioning systems and high costs by electricity energy consumption. For this reason, adequate design strategies and thermodynamic concepts have to be applied in order to make dwellings comfortable. Two dwellings are simulated and analyzed, the first one is made of regional materials like traditional concrete block walls, reinforced concrete roofs and economic finishes, the second one is proposed with a green roof and insulation in walls. The heat gains through the different constructive elements have been obtained, to analyze their impact on global thermal comfort and the electricity energy consumption of air cooling systems. Also, an exergy analysis has been applied to analyze exergy efficiency of air cooling systems and the influence that the building envelope can have in them with the proposed changes. The minimum exergy expenditure of air conditioning systems required to achieve comfort conditions inside dwellings could be a useful benchmark for the comparison of various dwelling designs.
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McCormick, Norman J. "Inverse methods for multiple scattering problems." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.thd3.

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The objective of these inverse methods is to estimate the coefficients of a Legendre expansion of the angular single-scattering function from angular moments of external measurements of the ingoing and outgoing angular radiance. Two distinct methods based on the radiative transfer equation have been developed for non-normally illuminated slab geometry targets: a formally exact method that requires the solution of an upper triangular system of equations linear in the unknown coefficients, and an approximate method that requires the solution of a set of uncoupled equations. The first method requires angular moments over both the azimuthal and polar angles of both slab surfaces and is ill-conditioned with respect to simulated measurement errors. One way of circumventing the ill-conditioning is to reduce the number of unknowns by seeking only the coefficients for a model scattering law; example calculations illustrate the estimation of the two coefficients for the Henyey-Greenstein model. The second method, which requires only backscattered azimuthal moments following a pulsed irradiation, is surprisingly accurate, even to simulated measurement errors, but only the single scattering albedo, the asymmetry factor, and perhaps the second-order Legendre moment can be determined.The objective of these inverse methods is to estimate the coefficients of a Legendre expansion of the angular single-scattering function from angular moments of external measurements of the ingoing and outgoing angular radiance. Two distinct methods based on the radiative transfer equation have been developed for non-normally illuminated slab geometry targets: a formally exact method that requires the solution of an upper triangular system of equations linear in the unknown coefficients, and an approximate method that requires the solution of a set of uncoupled equations. The first method requires angular moments over both the azimuthal and polar angles of both slab surfaces and is ill-conditioned with respect to simulated measurement errors. One way of circumventing the ill-conditioning is to reduce the number of unknowns by seeking only the coefficients for a model scattering law; example calculations illustrate the estimation of the two coefficients for the Henyey-Greenstein model. The second method, which requires only backscattered azimuthal moments following a pulsed irradiation, is surprisingly accurate, even to simulated measurement errors, but only the single scattering albedo, the asymmetry factor, and perhaps the second-order Legendre moment can be determined.
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Udaykumar, H. S., R. Mittal, and W. Shyy. "Simulation of Flow and Heat Transfer With Phase Boundaries and Complex Geometries on Cartesian Grids." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-1093.

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Abstract This paper is an extension of our previous work on simulation of complex phase front evolution in the diffusion-dominated situation. The Navier-Stokes equations are solved using a finite-volume method based on a second-order accurate central-difference scheme in conjunction with a two-step fractional-step procedure. The key aspects that need to be considered in developing such a solver are imposition of boundary conditions on the immersed boundaries and accurate discretization of the governing equation in cells that are cut by these boundaries. A new interpolation procedure is presented which allows systematic development of a spatial discretization scheme that preserves the second-order spatial accuracy of the underlying solver. The presence of immersed boundaries alters the conditioning of the linear operators and this can slow down the iterative solution of these equations. The convergence is accelerated by using a preconditioned conjugate gradient method where the preconditioner takes advantage of the structured nature of the underlying mesh. The accuracy and fidelity of the solver is validated and the ability of the solver to simulate flows with very complicated immersed boundaries is demonstrated. The method will be useful in studying the effects of fluid flow on the evolution of complex solid-liquid phase boundaries.
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Ochoa, Jose M., Irene Marincic, Maria G. Alpuche, Sofia Canseco, and Ana C. Borbon. "Bioclimatic and Energy Efficiency Considerations for Social Housing: A Case Study in Hot Dry Climate." In ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54552.

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The development of social housing In Mexico during the last decade has been supported by the different levels of government (federal, state, and municipal) in order to assist low-income families. The accelerated construction that takes place in order to address the housing deficit causes a reduction in the quality of design and construction, which is also affected by rising building costs. Environmental comfort conditions inside the dwellings are reduced drastically when houses are constructed without considering climate conditions, especially in hot arid regions. This situation generates uncomfortable thermal conditions for users and high-energy costs due to the unavoidable need of air conditioning. User profiles, architectural program, comfort preferences and guidelines for design and construction of future dwellings in the city of Hermosillo, in northwest Mexico, were determined by surveying beneficiaries of government affordable housing programs. One survey measured the degree of satisfaction of inhabitants in a sample of over 370 households; a second survey sampled 200 households and was aimed at determining aspects of comfort. This paper describes the results of thermal simulations carried out on two housing models. The first model represents the type usually constructed by commercial developers, and the second is a proposal developed by the research team according to guidelines based on the results of the research project described before. This study is a preliminary step in the construction of a physical model for experimental research and demonstration.
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Colin, O., S. Chevillard, J. Bohbot, P. K. Senecal, E. Pomraning, and M. Wang. "Development of a Species-Based Extended Coherent Flamelet Model (SB-ECFM) for Gasoline Direct Injection Engine (GDI) Simulations." In ASME 2018 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icef2018-9684.

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The current work presents a recent development of the Extended Coherent Flamelet Model (ECFM) for 3D combustion modeling in spark-ignited gasoline engines. The reference-based ECFM model, originally published in 2003, computes the conditional unburned and burned gas species mass fractions from both real species and species tracers. This current work is motivated by two limitations of the reference-based model. First, the difference between convection of species tracers and convection of real species leads to small discrepancies between the two, due to high velocity gradients during gas exchange. This can lead to inaccurate estimation of the progress variable and consequently to negative conditional mass fractions in the burned gases after ignition. Second, the reference-based ECFM model assumes implicitly that the unburned and burned states correspond to the same mixture fraction. This assumption is valid for low stratification cases, but it can lead to substantial conditioning errors for highly stratified systems like gasoline direct injection (GDI) engines. To address these shortcomings, a new species-based ECFM (SB-ECFM) implementation is presented. In this species-based model, the unburned and burned gas states are entirely defined by the transported species in each zone. It is shown that SB-ECFM more reliably defines conditional quantities and the progress variable. This enhancement allows the use of a second-order central scheme in space when using full decoupling of auto-ignition and premixed flame progress variables as proposed in Robert et al., Proc. Comb. Inst, 2015, while the reference model is limited to the first-order upwind scheme in this case. Finally, simulations of a GDI engine are presented at different loads and rpm conditions. It is shown that, with the higher order scheme, SB-ECFM demonstrates very good agreement with measured pressure.
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10

Marques, Nelson P. C., and José C. F. Pereira. "Compressible Fluid Flow and Heat Transfer Navier-Stokes Predictions on Unstructured Grids." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0861.

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Abstract A second-order accurate finite volume method for solving compressible 2D flows on hybrid structured-unstructured grids is presented. Separate reconstruction and evolution steps are taken to discretize the convective terms. For the reconstruction step, a data-dependent Least-Squares procedure is used, while for the evolution step two recent flux functions are included: the HLLC approximate Riemann solver and the AUSM+ flux vector splitting. Steady-state solutions are obtained with an implicit backward Euler scheme. The assembled system is solved by iterative means (BiCGSTAB, GMRES) with ILU pre-conditioning. Two internal, steady, 2D flow test cases are presented to validate the code: a supersonic 10° ramp inside a channel and a laminar flow through a double-throated nozzle. The code proved accurate with the use of both flux functions when comparing the computed results with both an analytical (ramp) and a reference solution (nozzle). The GMRES solver generally required less CPU time until convergence for the inviscid test-case while the BiCGSTAB solver got the edge for the viscous calculations.
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