This paper provides a method of preliminary design for a two-dimensional, mixed compression, two-ramp supersonic inlet to maximize total pressure recovery and match the mass flow demand of the engine. For an on-design condition, the total pressure recovery is maximized according to the optimization criterion, and the dimensions of the inlet in terms of ratios to the engine face diameter are cal...

An investigation has been carried out to assess the effect of volute design on the performance of a centrifugal compressor. Three volutes, based on a turbocharger compressor volute, have been fabricated and tested. These volutes provided two that were larger than the original design, and one that was smaller. The alternative volute designs were fabricated from sheet steel and had a square cross...

This experimental investigation exemplifies the design and testing of diffuser at compressor inlet nozzle condenser outlet in vapour compression refrigeration system with help R134a refrigerant. The divergence angle 12°,14° convergent are designed for same diameters. Initially diffusers tested is used diameter equal to exit tube evaporator suction compressor. Diffuser helps increases pressure r...

In our work, we focused on measuring the performance characteristics of a test hydrogen fuel cell with an open cathode. The aim work was to verify effect mass flow through power output as function current density and voltage cell. A bench capable testing cells up 2000 W used measure characteristics. composed three its total membrane area 100 cm2. PIV measurement system flow. performed at inlet ...

In the current research, numerical analysis was used to investigate flow behavior through axial jet-pump with various mixing chamber configurations (straight pipe and straight pipe-diffuser-straight pipe) in presence of inlet swirling its influence on pump performance. The effects introducing suction motive line, are numerically investigated. optimum swirl angle is found be 45o which yields max...

A ventricular assist device (VAD), which is a miniaturized axial flow pump from the point of view of mechanism, has been designed and studied in this report. It consists of an inducer, an impeller, and a diffuser. The main design objective of this VAD is to produce an axial pump with a streamlined, idealized, and nonobstructing blood flow path. The magnetic bearings are adapted so that the impe...