Paper Title:
Study on the Calculation Method of Gas Flow in Vacuum System Based on the Fluent Software
  Abstract

In order to improve the calculation method of the vacuum system design, the research focus on the way applying the Fluent software to calculation of gas flow in vacuum system in this paper. It is proved that the permission pressure lower limit is 1Pa for meeting the continuity hypothesis. The applicable flow patterns include turbulent flow, laminar flow and transitional flow between turbulent and laminar flow, which are totally defined as the viscous flow in the traditional vacuum field. By means of user define function (UDF), a layer mesh cell of negative quality source is defined to simulate the constant volume flow rate at the inlet of positive displacement vacuum pump, which makes up for the lack of compressible fluid velocity outlet boundary conditions in Fluent. The usability of Fluent in vacuum system is confirmed by a successful calculating example of gas flow in an ice condenser of vacuum freeze dryer.

  Info
Periodical
Edited by
Honghua Tan
Pages
1425-1429
DOI
10.4028/www.scientific.net/AMM.29-32.1425
Citation
S. W. Zhang, J. C. Liu, G. Z. Song, Z. J. Zhang, "Study on the Calculation Method of Gas Flow in Vacuum System Based on the Fluent Software", Applied Mechanics and Materials, Vols. 29-32, pp. 1425-1429, 2010
Online since
August 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xiao Liang Feng, Xue Jun Xu
Abstract:Geographic Information Systems (GIS) are designed to support the management, manipulation, analysis, and modeling of spatial data. Water...
502
Authors: Xiao Hui He, Lei Gao, Hong Bing Liu, Zhi Gang Li
Chapter 2: Mechanical Engineering and Application
Abstract:This paper has studied the partial cavitation of 2-D hydrofoil based on the theory of viscous flow. The numerical calculation sets forth from...
102
Authors: Zhan Ying Wu, Zhen Wei Mu
Chapter 9: Hydraulic and Fluid Engineering
Abstract:The unsteady flow RNG k ~ ε turbulence model and VOF Method are employed to numerically simulate 3-D flow field of diversion tunnel outlet...
2569
Authors: Jian Wu, Yang Hua, Wei Wei Shang, Yi Bin Liu, Bin Xu
Chapter 14: Engineering Thermodynamics and Thermal Engineering in Designing of Energy Equipment
Abstract:In order to build an accurate spray model for studying the characteristics of n-butanol and diesel blends. First, the calculation of...
1684
Authors: Yi Yang, Liang Chu, Di Fan, Yu Ting Huang
Chapter 5: System Test, Diagnosis, Detection and Monitoring, Instrumentation and Measurement, Optimization and Algorithms, Numerical Methods and Simulation
Abstract:This paper proposes a flow calculation method of the ball solenoid valve, by measuring diameter of the input valve spool, we can estimate the...
370