Theoretical 3D Numerical Simulation Of Plate Heat Exchanger Based On FLUENT

Plate heat exchanger is a kind of high efficient compact heat transfer equipment, which involves the application of almost all the industrial fields. In recent years, copper brazing plate heat exchanger with compact in size, light in weight, good heat transfer performance, and low operating cost advantages has increasingly been recognized. People also begin the research of fluid flow and heat transfer in plate heat exchangers. With the development of CFD (Computational Fluid Dynamics) technology, we can obtain the temperature, pressure and velocity vectors distribution of internal fluid. In this thesis, the author uses commercial CFD software to simulate chevron corrugated plate heat exchangers. The main contents include four parts of work as follows:(1) Based on the flow and heat transfer mechanism in a plate heat exchanger, create chevron corrugated plate heat exchanger model, finish mesh generation, establish boundary conditions and choose turbulence model.(2) Simulate plate heat exchangers with different corrugated inclination angleβ, height h and pitchλ,obtain temperature, pressure, velocity vectors distributions of domains, and fit curves of the geometrical parameters and Nu ,Δp, and at the same time compare experimental results with the literatures'.(3) Design and build plate heat exchanger water - water heat exchanger test system, by changing temperature and flow rate of the fluid into the heat exchanger, obtain a series of experimental data. (4) Create a complete chevron corrugated plate heat exchanger model, simulate one kind of plate heat exchanger and analyze its performance. In addition, compare numerical results with experimental data to verify the accuracy of the model.