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Статті в журналах з теми "Free Molecular Regime"
Pathak, Harshad, Kelley Mullick, Shinobu Tanimura, and Barbara E. Wyslouzil. "Nonisothermal Droplet Growth in the Free Molecular Regime." Aerosol Science and Technology 47, no. 12 (December 2013): 1310–24. http://dx.doi.org/10.1080/02786826.2013.839980.
Повний текст джерелаTERAO, TAKAMICHI, TAKUMI TERAOKA, and TSUNEYOSHI NAKAYAMA. "CHARACTERISTICS OF AEROSOL FORMATION IN THE FREE-MOLECULAR REGIME." Fractals 08, no. 03 (September 2000): 285–91. http://dx.doi.org/10.1142/s0218348x00000330.
Повний текст джерелаCai, J., and C. M. Sorensen. "Diffusion of fractal aggregates in the free molecular regime." Physical Review E 50, no. 5 (November 1, 1994): 3397–400. http://dx.doi.org/10.1103/physreve.50.3397.
Повний текст джерелаZhang, Kexue, Liyuan Xu, Yunyun Li, Fabio Marchesoni, Jun Wang, and Guodong Xia. "Self-propulsion of Janus particles in the free molecular regime." Physics of Fluids 34, no. 3 (March 2022): 033311. http://dx.doi.org/10.1063/5.0085921.
Повний текст джерелаTehranian, Shahram, Frank Giovane, Jürgen Blum, Yu-Lin Xu, and Bo Å. S. Gustafson. "Photophoresis of micrometer-sized particles in the free-molecular regime." International Journal of Heat and Mass Transfer 44, no. 9 (May 2001): 1649–57. http://dx.doi.org/10.1016/s0017-9310(00)00230-1.
Повний текст джерелаKogan, M. N., I. N. Bobrov, C. Cercignani, and A. Frezzotti. "Interaction of evaporating and condensing particles in the free‐molecular regime." Physics of Fluids 7, no. 7 (July 1995): 1775–81. http://dx.doi.org/10.1063/1.868492.
Повний текст джерелаHeinson, W. R., F. Pierce, C. M. Sorensen, and A. Chakrabarti. "Crossover from Ballistic to Epstein Diffusion in the Free-Molecular Regime." Aerosol Science and Technology 48, no. 7 (June 2, 2014): 738–46. http://dx.doi.org/10.1080/02786826.2014.922677.
Повний текст джерелаEWART, TIMOTHÉE, PIERRE PERRIER, IRINA A. GRAUR, and J. GILBERT MÉOLANS. "Mass flow rate measurements in a microchannel, from hydrodynamic to near free molecular regimes." Journal of Fluid Mechanics 584 (July 25, 2007): 337–56. http://dx.doi.org/10.1017/s0022112007006374.
Повний текст джерелаChinnappan, Arun K., Rakesh Kumar, Vaibhav K. Arghode, Kishore K. Kammara, and Deborah A. Levin. "Correlations for aerodynamic coefficients for prolate spheroids in the free molecular regime." Computers & Fluids 223 (June 2021): 104934. http://dx.doi.org/10.1016/j.compfluid.2021.104934.
Повний текст джерелаBoom, Boris A., Alessandro Bertolini, Eric Hennes, and Johannes F. J. van den Brand. "Gas Damping in Capacitive MEMS Transducers in the Free Molecular Flow Regime." Sensors 21, no. 7 (April 6, 2021): 2566. http://dx.doi.org/10.3390/s21072566.
Повний текст джерелаДисертації з теми "Free Molecular Regime"
Johansson, Martin Viktor. "Gas transport in porous media : an investigation of the hydrodynamic to free molecular flow regime." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0278.
Повний текст джерелаThe thesis investigates the transport of rarefied gas in porous media caused by either pressure or temperature gradients. A gas in porous media becomes rarefied when either the scale is small, as for micro and nanoporous media, or when the pressure is low (vacuum conditions). The measurement methodologies for the respective gradients are developed, and the results are analyzed. For a pressure gradient driven gas flow, the permeability is an intrinsic property and measure of how easily gas flows through the porous media. The gas flow behavior differs significantly depending on the degree of rarefaction. To characterize the rarefaction level of the gas flow inside a porous medium an additional intrinsic property is proposed, the characteristic flow dimension. This property also has a physical interpretation, and its measure for a porous sample can be used to characterize the sample as a non-destructive analysis method. When the porous media is subject to a temperature gradient under rarefied conditions, the thermal transpiration effect, causes gas flows from the cold side toward the hot end. Both the transient and stationary properties of the thermal transpiration in porous media are analyzed. The developed methodologies are applied to analyze the microporous ceramic membranes and sintered stainless steel porous media. The last type of porous media is particularly suitable for high-vacuum gauge calibration. The presented calibration method is easy to use, reliable and accurate
Sarangapani, Vamshi Krishna. "Investigation of the effect of radiation on the thermophoretic motion of soot particles in free-molecular regime." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Summer/master's/SARANGAPANI_VAMSHI_16.pdf.
Повний текст джерелаHong, Gang. "Monte Carlo simulation of squeeze-film air damping on micro resonators in the free-molecule regime /." View abstract or full-text, 2010. http://library.ust.hk/cgi/db/thesis.pl?MECH%202010%20HONG.
Повний текст джерелаChen, Pin-Chun, and 陳品均. "Investigation of the behaviors of rarefied gas flowing through the microchannel from the slip flow regime to the free molecular flow regime." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/n6chgz.
Повний текст джерела國立臺灣科技大學
機械工程系
107
This experiment used microelectromechanical technology to create a microchannel system in order to investigate the behavior of gas in the microchannel. The experiment gas included helium, nitrogen, argon, and the isothermal steady gaseous flows (298K). The gas through a rectangular microchannel(390um wide, 10.1 um deep, and 10000 um long)from the slip flow region to the free molecular flow region is conducted extensively.The microchannel is constructed on a silicon chip capped with a glass (Pyrex 7740) cover plate via anodic bonding to ensure that only experimental gas inside the microchannel. The minute mass flow rates (10^-9 to 10^-13 kg/s) are determined indirectly using the dual-tank constant-volume mass accumulation system designed by Arkilic. The result found that within the slip flow regime the TMACs for helium, nitrogen, and argon determined by quadratic fitting for 0.01
Hsien, Sheng-Fan, and 謝昇汎. "Parallel Monte Carlo Simulation of Supersonic Driven Cavity Flows from Free-molecular to Near-continuum Regime." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/14691963023465150484.
Повний текст джерела國立交通大學
機械工程系所
95
The driven cavity flow is one of the fundamental fluid flow problems with simple geometry that was often used as the benchmark test problem in computational fluid dynamics. Although they have been thoroughly studied in the literature, most of them were focused on incompressible or continuum compressible regime. Very few have been done in the rarefied and near continuum regimes. It may serve as the benchmarking problem for extending numerical scheme into flow in these regimes. Thus, this thesis describes the simulation of a two-dimensional supersonic driven cavity flow from free-molecular to near-continuum regime by directly solving the Boltzmann equation using the parallel direct simulation Monte Carlo method. Transient sub-cells [Tesng, et al., 2007] were implemented on a general unstructured grid to meet the nearest-neighbor collision requirement, while keeping minimal computational overhead and memory requirement simultaneously. Accuracy of simulation of transient sub-cells using larger sampling cell size was verified by comparing the results with that using much finer sampling cell size. Results show that transient sub-cells can greatly reduce the computational cost, which is especially important in the near-continuum regime. Flow structures within a driven cavity flow are then discussed in detail by varying the top plate speed (Ma=1.1-4) and Knudsen number of cavity (Kn=10-0.0033), in which the corresponding Reynolds number is in the range of 0.181- 1997.6. Results show that velocity slips and temperature jumps along the solid walls increase with increasing Knudsen number at the same Mach number. The additional second vortex occur at the right bottom wall in all Kn=0.01 and 0.0033 case. The Kn=0.0033 and M=4 has the third vortex at the left bottom corner. Results show that vortex center move toward left and down as Mach number increasing at the same Kn=0.01 and 0.0033. But the vortex center move toward the opposite way for Kn=10, 1 and 0.1.
Shrivastav, Vaibhav R. "Optimization of Lennard-Jones potential parameters and benchmark comparison between ion mobility calculators in free molecular regime." Thesis, 2017. https://doi.org/10.7912/C2407B.
Повний текст джерелаIon Mobility Spectrometry (IMS) is a widely used technique to differentiate charged particles in the gas phase. Although there has been a significant computational development over the past few decades for calculating Ion Mobility and Collision Cross Section (CCS), still there is a need to develop it in terms of its efficiency and performance, to better understand the dynamics of the collision. The work presented here demonstrates the efficiency and performance of newly developed mobility calculator: IMoS. The results were compared to MOBCAL and were found to be in a good agreement for He and N2 for the same input parameter. IMoS, which has an ability to be parallelized, gave similar values for CCS (within 1% of error) with a speed of two order of magnitude, which is higher than that of MOBCAL. Various options of approximations such as Diffused Trajectory Methods (DHSS, TDHSS) with and without partial charges and Projected Area approximation were considered in this work which lead us to reduce the total computational time required for the calculations. A careful computational study was carried out for 47 organic molecules and few large biomolecules (> 10000 atoms) to demonstrate the similarity and differences in two widely used mobility calculator – IMoS and MOBCAL. As the calculations were made faster using IMoS, it was a necessary step to develop an optimization algorithm in order to optimize the Lennard-Jones potential parameters for gas phase calculations used in the Trajectory Method. The process of optimization follows a multiple iterative path, wherein the parameters are completely optimized for all the given elements. A surface plot was generated using tens and thousands of data points for C, H, N, O, and F to study the relationship between epsilon (ε) and sigma (σ) for each element in the N2 buffer gas. The function (F) used here is a function of experimental CCS and IMoS generated CCS, which was minimized in the process of optimization. These optimized values can be used in the mobility calculator for calculating accurate Collision Cross Sectional values.
Lu, Chin-Chuan, and 盧勁全. "Simulation of Square Driven Cavity Flows from Free-Molecular to Near-Continnum Regime Using Model Boltzmann Equation." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/81425628863720896837.
Повний текст джерела國立交通大學
機械工程系所
95
The driven cavity flow is one of the benchmark problems often used in computational fluid dynamics due to its simple geometry but highly singular points at the corners. It is often used to verify different numerical methods for fluid-flow simulation. However, past studies in this regard focused on flows in thc continuum regime. Very few researches have been done systematically in the rarefied or near-contiuum regime. Several applications require consideration of rarefaction, which motivates the present thesis to focus on simulation of driven cavity flows in this region. This thesis reports the simulation of a two-dimensional top driven square cavity flows from free-molecular to near-continuum regime using a model Boltzmann equation (MBE) solver. The MBE was discretized using finite-difference scheme and discrete ordinate method for the configuration and velocity space, respectively. The collision integral was approximated by either the BGK or Shakov model. The MBE solver was first verified by comparing the results to those obtained using direct simulation Monte Carlo method for a driven cavity flow at Kn=0.0033 and Ma=2.0. Simulation conditions include Knudsen number and speed of the top driven plate in the range of Kn=10-0.0033 and Ma=0.5-2, respectively. Results show that the velocity slips and temperature jumps increase at the solid walls with increasing rarefaction at the same Mach number. The vortex center move toward left and down as Knudsen number (Kn=10, 1, 0.1, 0.01) decreasing for M=0.5, 0.9, 1.1, and 2, when Kn=0.0033 is opposite. But the vortex center move toward the opposite way for M=0.5, Kn=0.0033 and M=2, Kn=0.0033. For Kn=0.01, and 0.0033, under the main vortex secondary eddies have been created at the two bottom corners. Only in this special example for M=2, Kn=10, unnder the main vortex secondary eddie have been created at the right bottom corners.
Книги з теми "Free Molecular Regime"
Wick, Wolfgang, Colin Watts, and Minesh P. Mehta. Oligodendroglial tumours. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199651870.003.0004.
Повний текст джерелаЧастини книг з теми "Free Molecular Regime"
Marlow, William H. "Long-Range Attraction in the Collisions of Free-Molecular and Transition Regime Aerosol Particles." In Rarefied Gas Dynamics, 1205–20. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2467-6_52.
Повний текст джерелаBeskok, A. "Gas Flows in the Transition and Free Molecular Flow Regimes." In Microfluidics Based Microsystems, 243–56. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9029-4_13.
Повний текст джерелаZolnikov, Konstantin P., Dmitrij S. Kryzhevich, and Aleksandr V. Korchuganov. "Regularities of Structural Rearrangements in Single- and Bicrystals Near the Contact Zone." In Springer Tracts in Mechanical Engineering, 301–22. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_14.
Повний текст джерела"The Free-Molecular Regime." In Fluid Mechanics and Its Applications, 91–140. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-5865-3_7.
Повний текст джерелаNitzan, Abraham. "Solvation Dynamics." In Chemical Dynamics in Condensed Phases. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780198529798.003.0022.
Повний текст джерела"Calculations of Rarefied Gas Flows in Free-Molecular and Transitional Regimes." In Microfluidics and Nanofluidics Handbook, 64–115. CRC Press, 2011. http://dx.doi.org/10.1201/b11377-7.
Повний текст джерелаSligar, Stephen G., and Clifford R. Robinson. "Osmotic and Hydrostatic Pressure as Tools to Study Molecular Recognition." In High Pressure Effects in Molecular Biophysics and Enzymology. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195097221.003.0026.
Повний текст джерела"Condensation and Evaporation of a Spherical Droplet in the Near Free Molecule Regime." In Rarefied Gas Dynamics: Physical Phenomena, 447–59. Washington DC: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/5.9781600865916.0447.0459.
Повний текст джерелаLeak, David J., Xudong Feng, and Emma A. C. Emanuelsson. "Enzyme Biotransformations and Reactors." In Chemical Processes for a Sustainable Future, 320–46. The Royal Society of Chemistry, 2014. http://dx.doi.org/10.1039/bk9781849739757-00320.
Повний текст джерелаBudnikov, Dmitry, and Aleksey Vasiliev. "The Use of Microwave Energy at Thermal Treatment of Grain Crops." In Handbook of Research on Renewable Energy and Electric Resources for Sustainable Rural Development, 475–99. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3867-7.ch020.
Повний текст джерелаТези доповідей конференцій з теми "Free Molecular Regime"
Hong, Gang, Wenjing Ye, and Takashi Abe. "Molecular Dynamics Simulation of Squeeze-Film Damping in the Free-Molecule Regime." In RARIFIED GAS DYNAMICS: Proceedings of the 26th International Symposium on Rarified Gas Dynamics. AIP, 2008. http://dx.doi.org/10.1063/1.3076433.
Повний текст джерелаEwart, Timothe´e, Irina A. Graour, Pierre Perrier, and J. Gilbert Me´olans. "Mass Flow Rate Measurements: From Hydrodynamic to Free Molecular Regime." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62177.
Повний текст джерелаMartin, Michael J., and Whitney Schmieder. "Thermo-Mechanical Simulation of Crooke’s Cantilevers in the Free-Molecular Flow Regime." In 54th AIAA Aerospace Sciences Meeting. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-2188.
Повний текст джерелаLiu, Fengshan, Min Yang, David R. Snelling, and Gregory J. Smallwood. "Numerical Calculations of Heat Conduction Between Soot Aggregates and the Surrounding Gas in the Free-Molecular Regime Using the DSMC Method." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72433.
Повний текст джерелаChinnappan, Arun Kumar, Sai Abhishek Peddakotla, Rakesh Kumar, and Vaibhav K. Arghode. "Transport of non-spherical particle in free molecular regime using the DSMC method." In 31ST INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS: RGD31. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5119575.
Повний текст джерелаGraur, I. A., P. Perrier, W. Ghozlani, J. G. Méolans, and Takashi Abe. "Mass Flow Rate Measurements in a MicroChannel: from Hydrodynamic to Free Molecular Regime." In RARIFIED GAS DYNAMICS: Proceedings of the 26th International Symposium on Rarified Gas Dynamics. AIP, 2008. http://dx.doi.org/10.1063/1.3076618.
Повний текст джерелаLi, Pu, Cunhao Lu, and Longfei Yang. "Analytical model of squeeze film air damping for circular microplates in the free molecular regime." In 2018 IEEE 3rd Advanced Information Technology, Electronic and Automation Control Conference (IAEAC). IEEE, 2018. http://dx.doi.org/10.1109/iaeac.2018.8577899.
Повний текст джерелаMartin, Michael James. "Heat Transfer and Pressure Drop Through Nano-Fin Arrays in the Free-Molecular Flow Regime." In ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75312.
Повний текст джерелаPark, Jae Hyun, and Ali Beskok. "DSMC Analysis of Fluid Film Damping in Laterally Oscillating Microstructures." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41610.
Повний текст джерелаDonkov, Alexander A., Steffen Hardt, Sudarshan Tiwari, and Axel Klar. "Coupling of Heat and Momentum Transfer Between Nanostructured Surfaces." In ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASMEDC, 2009. http://dx.doi.org/10.1115/mnhmt2009-18061.
Повний текст джерелаЗвіти організацій з теми "Free Molecular Regime"
Mulholland, George W., Raymond D. Mountain, and Howard Baum. Simulation of aerosol agglomeration in the free molecular and continuum flow regimes. Gaithersburg, MD: National Bureau of Standards, 1986. http://dx.doi.org/10.6028/nbs.ir.86-3342.
Повний текст джерела