Results 241 to 250 of about 6,802 (281)

Numerical Simulation of Wet Steam Condensing Flow Based on a Two-fluid model

2007
A two-fluid model of wet steam condensing flow was established, in which the effect of velocity slipping and coupling between the steam and liquid phases as well as the turbulent diffusion were taken into account. Referred to the transport equation theory of particle’s turbulent kinetic energy, the SST k-ω-k p two-phase turbulence model was derived ...
Guojun Li, Zhenping Feng, Feng Zhenping   +2 more
exaly   +2 more sources

Wet steam flow and condensation loss in turbine blade cascades

Applied Thermal Engineering, 2021
This study develops a wet steam modelling to solve the phase change process inside the blade cascade of a steam turbine. The comparative study is carried out to understand the impact of the dry gas model and wet steam model on predicting the flow ...
Chuang Wen, Yan Yang, Hongbing Ding
exaly   +3 more sources

Numerical investigation of discharge pressure effect on steam ejector performance in renewable refrigeration cycle by considering wet steam model and dry gas model

Chemical Product and Process Modeling
Abstract In recent times, steam ejectors have garnered significant interest among researchers due to their environmental friendliness and the utilization of low-grade energy sources. However, a key drawback of the ejector refrigeration cycle (ERC) is its relatively low coefficient of performance (COP).
Weihua Guan
exaly   +2 more sources

Effect of mixing on the performance of wet steam ejectors

Energy, 2015
Steam ejector computational simulations using a wet steam model give higher entrainment ratios and higher critical back pressures for the ejector compared with the ideal gas model. This paper identifies the origin of these differences. Simulation results
Kavous Ariafar, David Buttsworth
exaly   +2 more sources

The Feasibility of an Euler–Lagrange Approach for the Modeling of Wet Steam

Journal of Engineering for Gas Turbines and Power, 2021
Abstract This study investigates the applicability of an Euler–Lagrange approach for the calculation of nucleation and condensation of steam flows. Supersonic nozzles are used as generic validation cases, as their high expansion rates replicate the flow conditions in real turbines.
Tim Wittmann, Christoph Bode, Jens Friedrichs   +2 more
openaire   +1 more source

A modified model of the suction technique of wetness reducing in wet steam flow considering power-saving

Energy, 2022
Abstract Nowadays, the presence of droplets in industrial devices such as ejectors, turbine blades, and nozzles causes the reduction of efficiency and reduces the life-cycle of the device by the erosion of walls. The wet steam model is validated by the experimental data. The purpose of this study is to dehumidify and increase the power-saving via the
Amir Momeni Dolatabadi, Esmail Lakzian, Mahdi Heydari, Afrasyab Khan   +3 more
openaire   +1 more source

Modelling and Validation of Wet Steam Flow in a Low Pressure Steam Turbine

Volume 7: Turbomachinery, Parts A, B, and C, 2011
Results of numerical investigations of the wet steam flow in a three stage low pressure steam turbine test rig are presented. The test rig is a scale model of a modern steam turbine design and provides flow measurements over a range of operating conditions which are used for detailed comparisons with the numerical results.
Jo¨rg Starzmann, M. Schatz, M. V. Casey, J. F. Mayer, Frank Sieverding   +4 more
openaire   +1 more source

Numerical Modelling of Wet Steam Flows in Turbine Blades

2021
Computational fluid dynamics modelling is developed to study steam condensations within turbine blades. The numerical result is validated against experimental data available in the literature. The comparison of pressure distributions at blade pressure and suction sides demonstrates that the numerical results agree well with experimental data.
Chuang Wen, Xiaowei Zhu, Hongbing Ding, Yan Yang   +3 more
openaire   +1 more source

The Feasibility of an Euler-Lagrange Approach for the Modelling of Wet Steam

Volume 2C: Turbomachinery, 2020
Abstract This study investigates the applicability of an Euler-Lagrange approach for the calculation of nucleation and condensation of steam flows. Supersonic nozzles are used as generic validation cases, as their high expansion rates replicate the flow conditions in real turbines.
Tim Wittmann, Christoph Bode, Jens Friedrichs   +2 more
openaire   +1 more source

Vibration characteristics and life prediction of last stage blade in steam turbine Based on wet steam model

Engineering Failure Analysis
Pengfei Hu, Jie Wan
exaly   +2 more sources