Study of the wet steam flow in the blade tip rotor linear blade cascade

Dykas, Sławomir; Majkut, Mirosław; Smołka, Krystian; Strozik, Michał

doi:10.1016/j.ijheatmasstransfer.2017.12.022

Cited by 49 publications

(21 citation statements)

References 11 publications

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“…The nucleation and condensation of condensable gases are overwhelmingly complicated due to the non-equilibrium state in supersonic flows. For the mathematical modelling of this kind of flow behaviour, the following assumptions are used in this study: a) external particles are neglected since the focus is on the spontaneous condensation phenomenon [36], b) the effect of gravitational forces is negligible in numerical simulations [37], c) the tiny condensed droplets follow the vapour-phase streamlines with no slip velocity [38]…”

Section: Mathematical Modellingmentioning

confidence: 99%

An efficient approach to separate CO2 using supersonic flows for carbon capture and storage

et al. 2019

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Section: Mathematical Modellingmentioning

confidence: 99%

An efficient approach to separate CO2 using supersonic flows for carbon capture and storage

et al. 2019

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“…Condensation, as a nonequilibrium and unsteady thermodynamic phenomenon, is commonly occurred in some engineering applications such as supersonic/transonic nozzles or the last stages of low-pressure steam turbines. Due to the destructive effects of condensation, this phenomenon has been investigated in many studies both numerically [1][2][3][4][5][6][7][8] and experimentally [9][10][11][12][13]. During the expansion of steam in the special condition in a low-pressure turbine blade, one-phase vapor changes into a two-phase mixture after supercooling and nucleation.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of wet inflow in steam turbine cascades using NURBS-based mesh generation method

Ebrahimi-Fizik

Lakzian

Hashemian

2020

International Communications in Heat and Mass Transfer

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“…The steam turbine is an essential part of power generation plant for thermal and nuclear electric generation [1]. When the steam flow expands in turbine blade, it easily leads to the non-equilibrium condensation phenomena [2].…”

Section: Introductionmentioning

confidence: 99%

Entropy generation and exergy destruction in condensing steam flow through turbine blade with surface roughness

Ding

Lakzian

et al. 2019

Energy Conversion and Management

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In the steam turbine, the wetness loss due to vapor condensation is one of the most crucial losses at low-pressure stage. This study focused on entropy generation and exergy destruction of condensing steam flow in turbine blade with the roughness. The governing equations including entropy transport equation combined with condensation model, transition SST model and roughness correlation were established and verified by experiments and theory. Flow field behaviors, such as wetness fraction, intermittency and turbulent viscosity distributions, controlled by the deviation angle were obtained to evaluate effects of back pressure ratio and surface roughness. The mass-averaged wetness fraction at outlet was also extracted considering the influence of uneven mass flux. Finally, each part of entropy generation derived from viscous, heat conduction, phase change and aerodynamic losses and exergy destruction ratio were analyzed.Research shows that roughness plays an important part in the intermittency and turbulent viscosity. The mass-averaged wetness fraction at outlet sharply drops with back pressure ratio but slightly decreases with the roughness. With the roughness rising * at stagnation condition mass generation rate, kgm -3 s -1 * 1

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Study of the wet steam flow in the blade tip rotor linear blade cascade

Cited by 49 publications

References 11 publications

An efficient approach to separate CO2 using supersonic flows for carbon capture and storage

An efficient approach to separate CO2 using supersonic flows for carbon capture and storage

Numerical investigation of wet inflow in steam turbine cascades using NURBS-based mesh generation method

Entropy generation and exergy destruction in condensing steam flow through turbine blade with surface roughness

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