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RISOne-Dimensional Modeling for Pulsed Flow Twin-Entry Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: One-dimensional (1D) modeling is critical for turbomachinery unsteady performance prediction and system response assessment of internal combustion engines. This paper uses a novel 1D modeling (TURBODYNA) and proposes two ...
Understanding of Secondary Flows and Losses in Radial and Mixed Flow Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Radial or mixed flow turbines are very common in industrial application, spanning turbochargers, small turbines for power generation, and energy recovery systems. Secondary flows have received a limited attention in the ...
TURBODYNA: A Generic One-Dimensional Dynamic Simulator for Radial Turbomachinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The turbocharged piston-driven engines are widely used in high altitude long endurance unmanned aerial vehicles (HALE UAVs). Repeated actions of engine pistons and valves give rise to engine pulsations resulting in intensive ...
Heat Transfer Enhancement in Pulsating Flows: A Bayesian Approach to Experimental Correlations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This research focuses on improving the modeling of heat transfer effects in pulsating exhaust flows. We address the challenges of understanding oscillating flow by employing the Metropolis–Hastings Markov Chain Monte Carlo ...
Numerical and Experimental Investigation of a Low Order Radial Turbine Model for Engine-Level Optimization of Turbocharger Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the development and validation of a meanline model by means of numerical and experimental methods, to determine it's feasibility as an optimization tool for turbocharger matching. Using a parametric ...
Unsteady Gas Dynamics of Radial Turbine Volutes Under Pressure Pulsations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Turbocharging is the key technique to improve engine-specific power and reduce CO2 emissions of a piston-driven engine. Repeated actions of engine pistons and valves give rise to engine pulsations resulting in intensive ...
Modeling of Dynamic Response of a Radial Turbine to Pulsatile Incoming Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The unsteady response of a turbine exposed to pulsatile incoming flow is studied via the analytical model in this article. First, the response of output torque of the turbine to pulsatile condition is theoretically studied ...
Three-Dimensional Computational Loss Analysis of a Compressor for Heavy Duty Truck Engine Turbochargers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a detailed loss analysis of a centrifugal compressor stage with a vaned diffuser for application in a heavy-duty engine turbocharger. The analysis is carried out in order to investigate the loss ...
Effect of Exit Pressure Pulsation on the Performance and Stability Limit of a Turbocharger Centrifugal Compressor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: It is well known that compressor surge imposes a significant limit on the flow range of a turbocharged internal combustion engine. The centrifugal compressor is commonly placed upstream of the inlet manifold, and hence, ...
Performance Analysis of a Centrifugal Compressor Based on Circumferential Flow Distortion Induced by Volute
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A volute is one of the key components in a centrifugal compressor. The aerodynamic stability of the compressor deteriorates remarkably when a volute is employed. This paper investigates the influence of volute-induced ...