Thermo Fluids and Energy

Impact of Building Architecture to Thermal Comfort Level a Case Study at University of Moratuwa, Sri Lanka

Researchers
N.A.I.D.Nissanka, A.T.D.Perera and R.A.Attalage

Lumped Mass Thermal (LMT) model was used to evaluate the net heat gain to the building through solar heating, internal heat generation Effect of the building orientation, cross ventilation and special architectural aspects such as courtyards, grill design etc were evaluated using the same model Hourly dry bulb temperature, wet bulb temperature, humidity level and solar irradiation level of the two buildings throughout the day were taken

Impact of Building Architecture to Thermal Comfort Level a Case Study at University of Moratuwa, Sri Lanka

Evolutionary Multi Objective Optimization to Optimize Waste to Energy Network

Researchers
A. T. D. Perera, D.N.S. Kuruppumullage, N.A.I.D. Nissanka, A.A.P. de Alwis

Decision making related with Municipal Solid waste management is a challenging exercise where number of techno-economical and environment factors conflicting to each other need to be optimized. However, mathematical modeling and optimization techniques based on artificial intelligence can be used in such instances in order to support decision making. Novel multi-objective optimization algorithm based on evolutionary computation was developed carry out this task. Direct land filling,

Evolutionary Multi Objective Optimization to Optimize Waste to Energy Network

Estimation of View Factors for Enclosures with Multiple Surfaces

Researchers
M.P.G. Sirimanna, A.T.D. Perera

View factor (form factor, shape factor, configuration factor) is an essential parameter for surface to surface radiant heat exchange formulations·  A general formulation based on vector representation and numerical procedures to estimate view factors were developed·  A computational tool which provides view factors of five surface roof enclosure  was developed based on the numerical model ·

Estimation of View Factors for Enclosures with Multiple Surfaces

An Inviscid Model for Unsteady Flow in Doubly Connected Domains

Researchers
K.K.M.N.P. Samaraweera, M.A.C.K. Gunarathna, K.A.L. Kollure

The work is on proposing an inviscid model for evaluating unsteady flow including vortex motion and free stream, in doubly connected domain. Recent advancements on evaluating potential flow in multiply-connected domain are employed. As illustrative physical examples, wake patterns of various biplane motions and the circulation developed around each aerofoil are depicted in the paper. The study has fundamental importance in wake simulation from biplane configurations,

An Inviscid Model for Unsteady Flow in Doubly Connected Domains