SPH-based simulation of flowing process of power-law fluid in sharply contractive pipe(PDF)
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
- Issue:
- 2012年01期
- Page:
- 38-43
- Research Field:
- 研究与设计
- Publishing date:
Info
- Title:
- SPH-based simulation of flowing process of power-law fluid in sharply contractive pipe
- Author(s):
- LIU Hu; QIANG Hong-fu; HAN Ya-wei; CHEN Fu-zhen
- Second Artillery Engineering University, Xi’an 710025, China
- Keywords:
- smoothed particle hydrodynamics; power-law fluid; sharply contractive
- PACS:
- V434-34
- DOI:
- -
- Abstract:
- The flowing characteristics of the power-law fluid in the sharply contractive pipe were simulated with the smoothed particle hydrodynamics (SPH) method. The control equations of SPH fluid dynamics were deduced, which imposed boundary conditions by penalty function, avoided so-called stretching instability by artificial stress and regulated the particle distribution with XSPH method. The SPH solving formula of power-law model is proposed and the algorithms of shear rate and viscosity term are presented. The formula was verified by a calculation example of Poiseuille flow. The flowing characteristics of both power-law fluid and Newtonian fluid in sharply contractive pipe were obtained. The flowing characteristics of the power-law fluid are analyzed and discussed.
Last Update: 1900-01-01