**Commenced**in January 2007

**Frequency:**Monthly

**Edition:**International

**Paper Count:**5

# Search results for: variable viscosity

##### 5 Throughflow Effects on Thermal Convection in Variable Viscosity Ferromagnetic Liquids

**Authors:**
G. N. Sekhar,
P. G. Siddheshwar,
G. Jayalatha,
R. Prakash

**Abstract:**

**Keywords:**
Ferroconvection,
throughflow,
temperature dependent
viscosity,
magnetic field dependent viscosity.

##### 4 Effect of Variable viscosity on Convective Heat Transfer along an Inclined Plate Embedded in Porous Medium with an Applied Magnetic Field

**Authors:**
N.S. Tomer,
Phool Singh,
Manoj Kumar

**Abstract:**

**Keywords:**
Heat Transfer,
Magnetic Field,
Porosity,
Viscosity

##### 3 Exact Solutions of Steady Plane Flows of an Incompressible Fluid of Variable Viscosity Using (ξ, ψ)- Or (η, ψ)- Coordinates

**Authors:**
Rana Khalid Naeem,
Asif Mansoor,
Waseem Ahmed Khan,
Aurangzaib

**Abstract:**

The exact solutions of the equations describing the steady plane motion of an incompressible fluid of variable viscosity for an arbitrary state equation are determined in the (ξ,ψ) − or (η,ψ )- coordinates where ψ(x,y) is the stream function, ξ and η are the parts of the analytic function, ϖ =ξ( x,y )+iη( x,y ). Most of the solutions involve arbitrary function/ functions indicating that the flow equations possess an infinite set of solutions.

**Keywords:**
Exact solutions,
Fluid of variable viscosity,
Navier-Stokes equations,
Steady plane flows

##### 2 Some Rotational Flows of an Incompressible Fluid of Variable Viscosity

**Authors:**
Rana Khalid Naeem,
Waseem Ahmed Khan,
Muhammad Akhtar,
Asif Mansoor

**Abstract:**

The Navier Stokes Equations (NSE) for an incompressible fluid of variable viscosity in the presence of an unknown external force in Von-Mises system x,\ are transformed, and some new exact solutions for a class of flows characterized by equation y f x a\b for an arbitrary state equation are determined, where f x is a function, \ the stream function, a z 0 and b are the arbitrary constants. In three, out of four cases, the function f x is arbitrary, and the solutions are the solutions of the flow equations for all the flows characterized by the equationy f x a\b. Streamline patterns for some forms of f x in unbounded and bounded regions are given.

**Keywords:**
Bounded and unbounded region,
Exact solution,
Navier Stokes equations,
Streamline pattern,
Variable viscosity,
Von- Mises system

##### 1 Numerical Study of Transient Laminar Natural Convection Cooling of high Prandtl Number Fluids in a Cubical Cavity: Influence of the Prandtl Number

**Authors:**
O. Younis,
J. Pallares,
F. X. Grau

**Abstract:**

This paper presents and discusses the numerical simulations of transient laminar natural convection cooling of high Prandtl number fluids in cubical cavities, in which the six walls of the cavity are subjected to a step change in temperature. The effect of the fluid Prandtl number on the heat transfer coefficient is studied for three different fluids (Golden Syrup, Glycerin and Glycerin-water solution 50%). The simulations are performed at two different Rayleigh numbers (5·106 and 5·107) and six different Prandtl numbers (3 · 105 ≥Pr≥ 50). Heat conduction through the cavity glass walls is also considered. The propsed correlations of the averaged heat transfer coefficient (N u) showed that it is dependant on the initial Ra and almost independent on P r. The instantaneous flow patterns, temperature contours and time evolution of volume averaged temperature and heat transfer coefficient are presented and analyzed.

**Keywords:**
Transient natural convection,
High Prandtl number,
variable viscosity.