Unsteady Free-Convection Flow on a Vertical Oscillating Porous Plate With Constant Heating

被引:11
作者
Toki, C. J. [1 ]
机构
[1] Technol Educ Inst Ionian Islands, Dept Ecol & Environm, Zakynthos 29100, Greece
来源
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME | 2009年 / 76卷 / 01期
关键词
flow instability; flow through porous media; heating; Laplace transforms; natural convection; porous materials; INFINITE; TEMPERATURE; SUCTION; LAYER;
D O I
10.1115/1.2998758
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
In this paper, we consider the unsteady free-convection flows of a viscous and incompressible fluid near an oscillating porous infinite vertical plate (or wall) during the heating of the plate. The governing equations are solved in closed form by the Laplace transform technique, when the Prandtl number (Pr) of the fluid is arbitrary and the suction (or injection) is constant. This solution is applied for a special case of the constant heating effects from the harmonically oscillating plate. The resulting velocity and temperature are shown graphically and are also discussed for the case of air (Pr=0.71) or water (Pr=7.0) flows.
引用
收藏
页码:1 / 4
页数:4
相关论文
共 18 条
[1]  
Chaudhary RC, 2007, ROM J PHYS, V52, P505
[2]   EXACT SOLUTIONS OF UNSTEADY HYDRODYNAMIC AND HYDROMAGNETIC BOUNDARY-LAYER EQUATIONS IN A ROTATING FLUID SYSTEM [J].
DEBNATH, L .
ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK, 1975, 55 (7-8) :431-438
[3]  
GEBHART B, 1988, BUOYANCY INDUCED FLO, pCH10
[4]   Flow in the Ekman layer on an oscillating porous plate [J].
Gupta, AS ;
Misra, JC ;
Reza, M ;
Soundalgekar, VM .
ACTA MECHANICA, 2003, 165 (1-2) :1-16
[5]   The effect of time-periodic surface temperature oscillations on free convection from a vertical surface in a porous medium [J].
Hossain, MA ;
Pop, I ;
Rees, DAS .
TRANSPORT IN POROUS MEDIA, 2000, 39 (01) :119-130
[7]   UNSTEADY MHD FREE-CONVECTION FLOWS ON A POROUS PLATE WITH TIME-DEPENDENT HEATING IN A ROTATING MEDIUM [J].
KYTHE, PK ;
PURI, P .
ASTROPHYSICS AND SPACE SCIENCE, 1988, 143 (01) :51-62
[8]   THE RESPONSE OF LAMINAR SKIN FRICTION AND HEAT TRANSFER TO FLUCTUATIONS IN THE STREAM VELOCITY [J].
LIGHTHILL, MJ .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1954, 224 (1156) :1-23
[9]   RADIATIVE AND FREE-CONVECTION EFFECTS ON THE OSCILLATORY FLOW PAST A VERTICAL PLATE [J].
MANSOUR, MA .
ASTROPHYSICS AND SPACE SCIENCE, 1990, 166 (02) :269-275
[10]   MHD FREE-CONVECTION FLOW NEAR A VERTICAL OSCILLATING PLATE [J].
NANOUSIS, ND ;
TOKIS, JN .
ASTROPHYSICS AND SPACE SCIENCE, 1984, 98 (02) :397-403