Computational fluid dynamics is a useful tool that can be used to solve navier strokes equations of fluid flow. These equations are quite complex in nature and are difficult to solve using hand calculations analytically. This tool helps designers avoid experimental costs by helping them analyse and optimize their designs through multiple iterations before narrowing down to final design.
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Source: Gifer
Heat transfer is concerned with mechanism of heat transfer between systems through conduction, convection and radiation and the utilization of this heat energy. This becomes an important part of designing and optimizing systems by using tools such as exergy analysis which works on the principle of second law of thermodynamics.
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Source: Forbes Marshall
Design is the process of giving shape, size and form to an object. Design of system is a key component in mechanical engineering and should take into consideration different factors such as ease of manufacturing the system, whether the design of system allows it to perform intended function and how efficient the design works out from an economical standpoint
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Source: Jeffrey J Jensen Wiki
Combustion is process by which a substance reacts with oxygen to give heat and other chemical products. Understanding the combustion phenomena like reaction rates and species concentration, mixing of fuel and oxidizer are important in optimizing design of systems like IC Engines, Gas Turbines etc. This phenomena can be better understood through tools like CFD
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Source: Gifer
IC engines are mechanical systems that convert chemical energy into mechanical power. With degrading fossil fuels, environmental pollution and stricter emission norms evolving, the need of the hour is to design IC engines that work efficiently on alternative fuels and release less emissions in compliance with emission standards.
Source: Anoxiety