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[CT144]

CT144 (1/1) : Classical thermodynamics, heat transfer (80-) / Hydrodynamic stability (76E) / Multiphase and multicomponent flows (76T)

Session Time & Room : 3C (Aug.23, 13:20-15:00) @D403
Type : Industrial Contributed Talk
Abstract : Evaporator is a critical component in integration of simple cycle gas turbine into combined cycle power plant. Evaporator should be designed in accurate way depend on thermal parameters (gas & water). The method developed for design evaporator of Baiji gas power plant in Iraq. The method based on modeling tow phase flow by combination of three governing equations of energy conservation, Mass conservation and momentum conservation equation with numerical simulation using finite difference method.
Classification : 80-xx, 80-10
Format : Talk at Waseda University
Author(s) :
- Maher Saab Salamah (Ministry of Electricity / Iraq)

Session Time & Room : 3C (Aug.23, 13:20-15:00) @D403
Type : Contributed Talk
Abstract : Crossing sea states are common phenomena in the oceans, and have been suggested as one possible generation mechanism for rogue waves. Modeling studies are conducted for (a) a two-layer fluid with long wave-short wave resonance, and (b) the triad resonance in a continuously stratified fluid with constant buoyancy frequency. Modulation instability will be enhanced. There is a preferred inclination of oblique wave propagation for a maximum growth rate, suggesting the occurrence of rogue waves.
Classification : 76E30, 35Q35, 76-10
Format : Talk at Waseda University
Author(s) :
- Qing Pan (The University of Hong Kong)

Session Time & Room : 3C (Aug.23, 13:20-15:00) @D403
Type : Contributed Talk
Abstract : The maximum density effect on natural convection in an enclosure filled with porous medium is numerically examined. One of the vertical walls is either fully or partially heated and various thermal boundary walls are considered for the cooling location. The nonlinear partial differential equations are solved by finite volume method together with power-law-scheme using SIMPLE algorithm. The qualitative results are expressed in the graphical form. The motivation for the study is the cooling of equipment.
Classification : 80-XX, 80Axx, 80Mxx, 65Yxx, 76R10, 80 Classical thermodynamics, heat transfer
Format : Talk at Waseda University
Author(s) :
- NITHYADEVI NAGARAJAN (Bharathiar University)

Session Time & Room : 3C (Aug.23, 13:20-15:00) @D403
Type : Contributed Talk
Abstract : I present a model for the normal impact of two elastic spheres colliding in incompressible constant-viscosity Newtonian fluid. Pressure is modelled by the Reynolds lubrication equation, and sphere deformation by Hertz contact theory. Modelling the radial pressure gradient by a Pad\'e approximant that is characterized by the centerline gap and curvature, and by rate of gap closing, the problem is reduced to a fourth-order system of ODEs that can be integrated numerically in time.
Classification : 76Txx, 74Fxx, 70Gxx
Format : Talk at Waseda University
Author(s) :
- John C. WELLS (Ritsumeikan University)

Session Time & Room : 3C (Aug.23, 13:20-15:00) @D403
Type : Contributed Talk
Abstract : Although the presence of slippage at polymer-polymer interfaces has been widely reported in experiments and MD simulations, its effect on the stability of superposed fluid layers undergoing shear has not been adequately addressed. Therefore, we formulate a mathematical model and under the assumption of one layer being asymptotically thin we derive a novel weakly non-linear evolution equation for the interface to study the linear stability and system dynamics. A slip-induced Turing-type instability is found.
Classification : 76E17, 76E30, 76E05, 76D05
Author(s) :
- Anna Katsiavria (Imperial College London)
- Demetrios Papageorgiou (Imperial College London)