Pressure wave machinery constitutes promising devices in various engineering propulsion applications such as superchargers in automobile engines and topping devices in gas turbines. This article presents applications of a numerical model for the flow field prediction inside wave rotors. The numerical method used consists of an approximate Roe solver that takes into account viscous and thermal losses inside the rotor as well as leakage losses at the extremities of the rotor. The model is extensively validated and then is applied on configurations suited for automobile engine supercharging and for topping devices for gas turbines. For both cases, satisfactory results are obtained by the comparison of the numerical predictions against experimental data available in the literature. It is concluded that the present method can accurately predict the basic unsteady flow patterns inside the rotor.
Centrifugal pumps are designed and manufactured in order to be fitted to installations and work over a wide range of operating conditions. In such cases the prediction of performance constitutes an important challenge for the pump designer. The challenge becomes particularly difficult when it is necessary to predict the performance of different types of centrifugal pumps varying from low to high volume flow rates. Even if one possesses the rig to measure the performance of a pump, it is useful and time saving to predict numerically the overall pump characteristics. The present method is a simple and easy to apply numerical tool for pump performance curve estimation. It requires a minimum of pump geometrical data and it can be advantageous to pump designers providing them with an initial performance curve estimation during the design process, before they advance to the detailed design of the pump and its experimental verification on the test rig. From the cases examined, it is concluded that the proposed method provides a satisfactory approximation of industrial centrifugal pumps' performance curves, constituting a potential tool for pump manufacturers.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.