Convectively driven flow past an infinite moving vertical cylinder with thermal and mass stratification

被引：13

作者：

Deka, Rudra Kanta ^{[1
]}

Paul, Ashish ^{[2
]}

机构：

[1] Gauhati Univ, Dept Math, Gauhati 781014, India

[2] Bodoland Univ, Dept Math Sci, Kokrajhar 783370, India

来源：

PRAMANA-JOURNAL OF PHYSICS | 2013年 / 81卷 / 04期

关键词：

Free convection; thermal stratification; mass stratification; Laplace transformation; vertical cylinder; TRANSIENT NATURAL-CONVECTION; VARIABLE SURFACE-TEMPERATURE; HEAT; FLUID;

D O I：

10.1007/s12043-013-0604-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An analysis is performed to study the unsteady, incompressible, one-dimensional, free convective flow over an infinite moving vertical cylinder under combined buoyancy effects of heat and mass transfer with thermal and mass stratifications. Laplace transform technique is adopted for finding solutions for velocity, temperature and concentration with unit Prandtl and Schmidt numbers. Solutions of unsteady state for larger times are compared with the solutions of steady state. Velocity, temperature and concentration profiles are analysed for various sets of physical parameters. Skin friction, Nusselt number and Sherwood number are shown graphically. It has been found that the thermal as well as mass stratification affects the flow appreciably.

引用

页码：641 / 665

页数：25

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