The effect of different swirler geometries on the flow dynamics inside a micro gas turbine combustion chamber model are widely used in automobiles. Designing air swirler to produce stable and efficient combustion with low-pressure losses is a challenge. A majority of heat exchangers used in thermal power plants, chemical processing plants, air conditioning equipment, and refrigerators, petrochemical, biomedical and food processing plants serve in heating and cooling of different types of fluids. Both the mass and overall dimensions of heat exchangers employed are continuously increasing with the unit power and the volume of production. This involves huge investments annually for both operation and capital costs. Hence, it is an urgent problem to reduce the overall dimensional characteristics of heat exchangers; and the need to optimize and conserve these expenditures has promoted the development of efficient heat exchangers.