Results 81 to 90 of about 10,991,658 (202)

High-performance computing of the unified stochastic particle method for multi-scale flows

Kongqi donglixue xuebao
Multi-scale flows are prevalent in extreme flight environments such as planetary reentry, and their inherently multi-scale nature poses severe challenges to traditional numerical methods.
Lefeng Xie, Fei Fei
doaj   +1 more source

Comparison between the DSMC and DSBGK Methods

, 2012
Theoretical analysis of algorithms and detailed comparison of simulation ...
openaire   +2 more sources

Evaporation Boundary Conditions for the Linear R13 Equations Based on the Onsager Theory

Entropy, 2018
Due to the failure of the continuum hypothesis for higher Knudsen numbers, rarefied gases and microflows of gases are particularly difficult to model.
Alexander Felix Beckmann, Anirudh Singh Rana, Manuel Torrilhon, Henning Struchtrup   +3 more
doaj   +1 more source

Direct numerical test of the B-G-K model equation by the DSMC method

, 2000
In the present paper the rarefied gas how caused by the sudden change of the wall temperature and the Rayleigh problem are simulated by the DSMC method which has been validated by experiments both in global flour field and velocity distribution function ...
沈青, 易志强
core   +2 more sources

A controller method of DSMC gas micro-channel flow simulations [PDF]

, 2010
This presentation looks at a controller method of DSMC gas micro-channel flow ...
White, Craig, Borg, Matthew Karl, Reese, Jason   +2 more
core   +3 more sources

Using Plücker Coordinates for Pumping Speed Evaluation of Molecular Pump in the DSMC Method

International Journal of Rotating Machinery, 2001
In this study, the Plücker coordinates representation is used to formulate the ruled surface and the molecular path for pumping speed performance evaluation of a molecular vacuum pump.
Fong-Zhi Chen, Ming-June Tsai, Yu-Wen Chang, Rong-Yuan Jou, Hong-Ping Cheng   +4 more
doaj   +1 more source

Molecular level simulations of combustion processes using the DSMC method [PDF]

A technique called the Direct Simulation Monte Carlo (DSMC) method is used for simulating laminar one-dimensional hydrogen-air flames with an aim to establish the feasibility of molecular-level simulations for combustion using the Quantum-Kinetic (QK ...

core   +2 more sources

Numerical simulation of across multiple flow vegimes over high-speed vehicles based on the multiscale discrete velocity method

Kongqi donglixue xuebao
To address the challenge of predicting flow characteristics of vehicles in rarefied gas environments at high altitudes across multiple flow regimes, the multiscale discrete velocity method coupled with a steady implicit algorithm was employed to conduct ...
Qingdian Zhang, Chengwen Zhong, Congshan Zhuo, Sha Liu   +3 more
doaj   +1 more source

Research on double sliding mode adaptive nonlinear control systems based on the U-model

Automatika
In this paper, the problem of high precision control for nonlinear continuous systems with external uncertainties is studied, and the state space expression of continuous time MIMO U-model is presented.
Fengxia Xu, Nan Wang, Zhongda Lu, Xinyu Zhang, Zhenyang Xu   +4 more
doaj   +1 more source

Bernoulli Trial (BT) Collision Operator Scheme Family in the Direct Simulation Monte-Carlo (DSMC): Derivation and Evaluation

Cybernetics and Information Technologies
The Direct Simulation Monte-Carlo (DSMC) method is based on splitting the rarefied gas process evolution into two ballistic and collision steps within a time step.
Padilla Francis, Roohi Ehsan, Stefanov Stefan   +2 more
doaj   +1 more source