In this paper, the dynamic simulation for a high pressure regulator is performed to obtain the regulator behavior. To analyze the regulator performance, the equation of motion for inner parts, the continuity equation for diverse chambers and the equation for mass flow rate were derived. Because of nonlinearity and coupling, these equations are solved using numerical methods and the results are ...

Abstract Five-hole probes (5HP) are a common tool for measurements of the velocity in turbomachinery studies. In those applications, spaces confined, which drives to get close walls. The proximity wall affects behavior 5HP. wall-related evolution calibration two hemispheric L-shaped 3D printed five-hole is investigated low speed wind tunnel. 2D Particle Image Velocimetry (PIV) and pressure were...

An adjoint preprocess for an adjoint-based turbomachinery design process is described. The resulting process is compared to a previously established adjoint process based on three-dimensional adjoint solutions and deformed meshes. Within the new process, the calculation of sensitivities is performed using shape sensitivities and surface displacements, where the design parameters are computer-ai...

The Graz Cycle, a hydrogen oxygen fired double loop high temperature steam cycle, combining gas turbine philosophy with steam plant praxis, can be adapted for combustion of methane with oxygen. The resulting combustion products carbon dioxide and hydrogen oxide, i.e. high temperature steam, are mixed with cooling steam and expanded to lowest pressure and temperature. By condensing the steam, se...

A supercritical ethane working fluid Brayton power conversion system is evaluated as an alternative to carbon dioxide. The HSC® chemical kinetics code was used to study thermal dissociation and chemical interactions for ethane and other coolants under a variety of conditions. The NIST database was used for reaction rates. Overall results were not conclusive. The supercritical behavior of ethane...

In order to improve efficiency in turbomachinery, brush seal replaces labyrinth seals widely the secondary air system. A 2-d staggered tube bank model is adopted simulate gas states and pressure character seal, computational fluid dynamics (CFD) used solve this paper. According simulation results, corrected formula of Euler number dimensionless are given. The results show that expands when flow...

turbocharging an engine boosts its power by increasing the amount of input air. this task is accomplished by using the exhaust gas to power a turbine which is engaged with a compressor. the variable geometry turbocharger, vgt is a unique turbocharger that the diffuser vane angle can be changed over a wide range of positions. the mathematics of turbomachinery flow analysis is intensive and uses ...

Abstract Any outlet restriction downstream of pressure gain combustion (PGC), such as turbine blades, affects its flow field and may cause additional thermodynamic losses. The unsteadiness in the form pressure, temperature, velocity vector fluctuations has a negative impact on operation conventional turbines. Additionally, experimental measurements data acquisition present researchers with chal...