Wyniki wyszukiwania - BazTech

1

Numerical study of MHD Williamson-nano fluid flow past a vertical cone in the presence of suction/injection and convective boundary conditions

Sathyanarayana Manthri, Goud Tamtam Ramakrishna

Archives of Thermodynamics

|

2023

|

Vol. 44, no 2

115--138

EN

The primary objective is to perform a numerical synthesis of a Williamson fluid that has nanoparticles added to it and is directed toward a vertical cone in a uniform transverse magnetic field, under heat and mass transport, suction and injection, and convective boundary conditions. For this particular fluid flow, by utilising similarity transformations, the partial differential equations are transformed into ordinary differential equations. Calculating these kinds of equations with their suitable bounds requires the Runge–Kutta technique in combining a shooting strategy. The functions of a vast number of parameters are graphically represented and assessed on flow field profiles. The results show the local skin friction, local Nusselt number, and local Sherwood number and the changing values of the flow constraints. Finally, the results are compared to those from the previously published works and found to be in good agreement.

2

A numerical study of dissipative chemically reactive radiative MHD flow past a vertical cone with nonuniform mass flux

Sambath P., Sankar D. S., Viswanathan K. K.

International Journal of Applied Mechanics and Engineering

|

2020

|

Vol. 25, no. 1

159--176

EN

A computational model is presented to explore the properties of heat source, chemically reacting radiative, viscous dissipative MHD flow of an incompressible viscous fluid past an upright cone under inhomogeneous mass flux. A numerical study has been carried out to explore the mass flux features with the help of Crank-Nicolson finite difference scheme. This investigation reveals the influence of distinct significant parameters and the obtained outputs for the transient momentum, temperature and concentration distribution near the boundary layer is discussed and portrayed graphically for the active parameters such as the Schmidt number Sc, thermal radiation Rd, viscous dissipation parameter […], chemical reaction parameter […], MHD parameter M and heat generation parameter ]…]. The significant effect of parameters on shear stress, heat and mass transfer rates are also illustrated.

3

Unsteady free convection flow along a vertical cone in a stable thermally stratified medium

Bapuji P., Ekambavanan K., Pop I.

International Journal of Applied Mechanics and Engineering

|

2009

|

Vol. 14, no 4

1073-1092

EN

Unsteady natural convection flow of a viscous and incompressible fluid flow over a vertical cone immersed in a stable thermally stratified medium is theoretically studied in this paper. The dimensionless coupled partial differential boundary layer equations are solved numerically using an efficient and unconditionally stable finite-difference scheme of Crank-Nicolson type. The effects of the Prandtl number and stratification parameter on the velocity and temperature profiles as well as the local and average skin friction and Nusselt numbers on the flow and heat transfer characteristics have been determined and discussed in detail. The present results are compared with available results from the open literature and are found to be in good agreement.

4

Mixed convection along a vertical cone with uniform surface heat flux for fluids of any Prandtl number

Kumari M., Jaradat M. A., Pop I.

International Journal of Applied Mechanics and Engineering

|

2007

|

Vol. 12, no 3

733-744

EN

An analysis of a steady laminar mixed convection boundary layer flow along a vertical cone of constant wall heat flux for any Prandtl number is presented. A mixed convection parameter [...], as proposed by Lin and Chen (1988), is used to serve as a controlling parameter that determines the relative importance of the forced and the free convection flows. New coordinates and dependent variabIes are then defined in terms of [...], so that the transformed non-similar boundary layer equations give computationally efficient numerical solutions which are valid over the entire range of the mixed convection flow from the forced convection limit [...] to the free convection limit [...] for fluids of any Prandtl number. The effect of the mixed convection parameter and the Prandtl number on the velocity and temperature profile s as well as on the skin friction and heat transfer coefficients are shown for both cases of buoyancy assisting and buoyancy opposing flow conditions, respectively.