A two regime orifice flow formula for numerical simulation

被引：20

作者：

Ellman, A

Piché, R

机构：

[1] Tampere Univ Technol, Inst Hydraul & Automat, FIN-33101 Tampere, Finland

[2] Tampere Univ Technol, Dept Math, FIN-33101 Tampere, Finland

来源：

JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME | 1999年 / 121卷 / 04期

关键词：

D O I：

10.1115/1.2802541

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Because the conventional formula for turbulent orifice flow rate has an infinite derivative when the pressure difference is zero, ODE solvers may fail during numerical simulation of fluid power circuits. To remedy this, a two-regime orifice flow formula is proposed in which an empirical polynomial laminar flow function is used for small pressure differences. The proposed formula has a smooth transition between laminar and turbulent regimes, and its derivative does not have any singularities.

引用

页码：721 / 724

页数：4

共 5 条

[1]

Bowns D E, 1986, P 7 INT FLUID POW S, P81

[2]

ELLMAN A, 1992, ACTA POLYTECHNICA ME, V101

[3]

ELLMAN AU, 1990, SAE J COMMERCIAL VEH, V99, P384

[4]

Krus P., 1986, International Journal of Modelling and Simulation, V6, P52

[5] NUMERICAL-INTEGRATION OF FLUID-POWER CIRCUIT MODELS USING 2-STAGE SEMIIMPLICIT RUNGE-KUTTA METHODS [J].

PICHE, R ;

ELLMAN, A .

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 1994, 208 (03) :167-175

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