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Start Over Creator Sacheti, Nirmal C.

1. A numerical investigation of a buoyancy driven flow in a semi-porous cavity: comparative effects of ramped and isothermal wall conditions

Creator:
Chandran, Pallath, Sacheti, Nirmal C., and Singh, Ashok K.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
rectangular cavity, free convection, brinkman model, coupled flow, ramped boundary condition, and numerical solution
Language:
Slovak
Description:
Steady two-dimensional natural convection taking place in a rectangular cavity, partially filled with an isotropic porous material, has been investigated numerically using an ADI method. It is assumed that one of the vertical walls of the cavity has a ramped temperature distribution. The vorticity-stream function formulation has been used to solve the set of nonlinear partial differential equations governing the flows in the clear region and the adjoining porous region. The effects of Darcy number and Rayleigh number have been discussed in detail.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Steady creeping flow of an inelastic fluid past a rigid sphere

Creator:
Sacheti, Nirmal C. and Chandran, Pallath
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
non-Newtonian fluid, Reiner-Philippoff fluid, creeping flow, stream function, drag, nenewtonská tekutina, Reinerova-Philippova tekutina, pomalé prúdenie, prúdová funkcia, and odpor
Language:
Slovak
Description:
An analytical solution for the creeping flow of an inelastic fluid past a solid sphere has been obtained using an empirical 3-parameter fluid model. The governing equations of motion have been solved aproximately using a perturbation approach. Expressions have been obtained for the Stokes stream function and the drag experienced by the stationary sphere. It is shown that the drag for the non-Newtonian fluid is greater than the one predicted by the classical Stokes formula. and Použitím trojparametrického empirického modelu tekutiny sme získali analytické riešenie pomalého prúdenia neelastickej tekutiny okolo pevnej gule. Pohybové rovnice boli riešené približne metódou malých rozruchov. Získali sme vzťahy pre výpočet Stokesovej prúdovej funkcie a pre odpor stojacej gule. Bolo ukázané, že tento odpor z obtekania je pre nenewtonskú tekutinu väčší, ako vyplýva z klasického vzťahu Stokesa pre newtonskú tekutinu.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public