报告题目：Modeling and simulation of nanofluidflow and heat transfer
报告人：DR. RIZWAN UL HAQ
报告摘要：In this presentation I would like topresent some fundamental definition of fluid dynamics and its types along withthe heat transfer concept due to its wide range of industrial applications. Allthe flow and heat transfer models ae based upon momentum and energy equation,respectively. Since there are many working fluid at the industrial level whichhave poor thermal conductivity. So, based upon deficiency in heat transfer,nanoparticles are incorporated to enhance the thermal conductivity of workingfluid. Various kind of nanofluids model are also under consideration. Theexpressions for nanofluid are related with the nanoparticles and base fluid,therefore five major characteristics are defined in the form of: density,dynamic viscosity, thermal expansion coefficient, specific heat and thermalconductivity. Even there are various kind of expression for effective thermalconductivity expression, which are based upon shape of nanoparticle. All thesaid expressions are incorporated with momentum and energy equation of givenfluid model. Since this model is in the form of coupled nonlinear system ofdifferential equation, therefore solutions of these equations are determined byappropriate analytical or numerical technique. Now situation arises when theconditions are defined at the surface of the given model. These conditions mustbe arising in the various form, for instance: for cavity or channel orperistaltic motion (bounded domain) and on the other hand if conditions aredefined for boundary layer phenomenon (semi-infinite domain). Results areobtained for velocity, temperature, skin friction and Nusselt number. Throughresults we can observed the behaviour of both base fluid and nanofluid. Evenresults are comparable for various kind of effective thermal conductivities.
报告人简介：DR. RIZWANUL HAQ, the Assistant Professor of Department of Electrical Engineering, BahriaUniversity. His research field is aboutFluidDynamics, nanofluid, heat transfer, numerical analysis, Boundary layer flow,Cavity flow models, channel flow, Peristaltic flow, Homotopy analysis method,Optimal Homotopy analysis method, Adomian Decomposition method, Finitedifference method, shooting technique, Finite element method.