316 Unsteady Flow Analysis of an Axial Flow Hydraulic Turbine with a Collection Device

2014 ◽  
Vol 2014.22 (0) ◽  
pp. 231-232
Author(s):  
Sou HIRAMA ◽  
Kaoru OKUBO ◽  
Yasuyuki NISHI ◽  
Terumi INAGAKI ◽  
Yanrong LE ◽  
...  
Keyword(s):  
Unsteady Flow ◽  
Flow Analysis ◽  
Axial Flow ◽  
Hydraulic Turbine ◽  
Collection Device ◽  
Unsteady Flow Analysis

Unsteady flow analysis of an axial flow hydraulic turbine with collection devices comprising a different number of blades

2015 ◽  
Vol 24 (3) ◽  
pp. 239-245 ◽  
Author(s):  
Yasuyuki Nishi ◽  
Terumi Inagaki ◽  
Yanrong Li ◽  
Sou Hirama ◽  
Norio Kikuchi
Keyword(s):  
Unsteady Flow ◽  
Flow Analysis ◽  
Axial Flow ◽  
Hydraulic Turbine ◽  
Unsteady Flow Analysis

421 Free Surface Flow Analysis of an Axial Flow Hydraulic Turbine with a Collection Device

2014 ◽  
Vol 2014.24 (0) ◽  
pp. 186-189
Author(s):  
Sou Hirama ◽  
Yasuyuki Nishi ◽  
Terumi Inagaki ◽  
Yanrong Li ◽  
Norio Kikuchi
Keyword(s):  
Free Surface ◽  
Flow Analysis ◽  
Axial Flow ◽  
Free Surface Flow ◽  
Hydraulic Turbine ◽  
Surface Flow ◽  
Collection Device

Unsteady Flow Analysis and Experimental Investigation of Axial-Flow Pump

2010 ◽  
Vol 22 (1) ◽  
pp. 35-43 ◽  
Author(s):  
De-sheng Zhang ◽  
Wei-dong Shi ◽  
Bin Chen ◽  
Xing-fan Guan
Keyword(s):  
Experimental Investigation ◽  
Unsteady Flow ◽  
Flow Analysis ◽  
Axial Flow ◽  
Axial Flow Pump ◽  
Unsteady Flow Analysis ◽  
Flow Pump

scholarly journals Study on an Axial Flow Hydraulic Turbine with Collection Device

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Yasuyuki Nishi ◽  
Terumi Inagaki ◽  
Kaoru Okubo ◽  
Norio Kikuchi
Keyword(s):  
Velocity Ratio ◽  
Axial Flow ◽  
Hydraulic Turbine ◽  
Power Coefficient ◽  
Speed Ratio ◽  
Maximum Output ◽  
Recovery Coefficient ◽  
Composite Body ◽  
Inlet Velocity ◽  
Collection Device

We propose a new type of portable hydraulic turbine that uses the kinetic energy of flow in open channels. The turbine comprises a runner with an appended collection device that includes a diffuser section in an attempt to improve the output by catching and accelerating the flow. With such turbines, the performance of the collection device, and a composite body comprising the runner and collection device were studied using numerical analysis. Among four stand-alone collection devices, the inlet velocity ratio was most improved by the collection device featuring an inlet nozzle and brim. The inlet velocity ratio of the composite body was significantly lower than that of the stand-alone collection device, owing to the resistance of the runner itself, the decreased diffuser pressure recovery coefficient, and the increased backpressure coefficient. However, at the maximum output tip speed ratio, the inlet velocity ratio and the loading coefficient were approximately 31% and 22% higher, respectively, for the composite body than for the isolated runner. In particular, the input power coefficient significantly increased (by approximately 2.76 times) owing to the increase in the inlet velocity ratio. Verification tests were also conducted in a real canal to establish the actual effectiveness of the turbine.

scholarly journals Developing Virtual Reality Visualizations for Unsteady Flow Analysis of Dinosaur Track Formation using Scientific Sketching

2019 ◽  
Vol 25 (5) ◽  
pp. 2145-2154 ◽  
Author(s):  
Johannes Novotny ◽  
Joshua Tveite ◽  
Morgan L. Turner ◽  
Stephen Gatesy ◽  
Fritz Drury ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Unsteady Flow ◽  
Flow Analysis ◽  
Track Formation ◽  
Unsteady Flow Analysis

scholarly journals A Numerical Method of Unsteady Flow Analysis in Duct with Junction

1977 ◽  
Vol 43 (366) ◽  
pp. 596-604
Author(s):  
Takeshi ADACHI ◽  
Harutaka TSUJIMURA ◽  
Masamichi IMAIZUMI
Keyword(s):  
Unsteady Flow ◽  
Numerical Method ◽  
Flow Analysis ◽  
Unsteady Flow Analysis

A New Indicator for Unsteady Flow Analysis in Pressurized Irrigation Systems

2018 ◽  
Vol 32 (9) ◽  
pp. 3219-3232 ◽  
Author(s):  
Nicola Lamaddalena ◽  
Roula Khadra ◽  
Bilal Derardja ◽  
Umberto Fratino
Keyword(s):  
Unsteady Flow ◽  
Flow Analysis ◽  
Irrigation Systems ◽  
Pressurized Irrigation ◽  
Unsteady Flow Analysis

Real Gas Effect on Unsteady Flow of Natural Gases in Shock Tubes

2011 ◽  
Vol 361-363 ◽  
pp. 603-606
Author(s):  
Yu Qiang Dai ◽  
Jiu Peng Zou ◽  
Che Zhu ◽  
Jin Tao Wu ◽  
Da Peng Hu
Keyword(s):  
Unsteady Flow ◽  
Flow Analysis ◽  
Shock Tubes ◽  
Wave Rotor ◽  
Real Gas ◽  
Natural Gases ◽  
Reflection And Refraction ◽  
Real Gas Effect ◽  
Unsteady Flow Analysis ◽  
Gas Effect

The unsteady flow behaviors in devices like gas wave machines, wave rotor refrigerators and so on are complex due to real gas effect at high operational pressure and low temperature. In this work, a detail computational model for unsteady flow analysis of real natural gases is established. The real effect on unsteady behaviors of natural gases in shock tubes have been studied extensively. Results show that the non-classical flow of the gases will not exist. The discipline of reflection and refraction of various gas waves or discontinuities remain unchanged for natural gases. Attention should be paid only to the deviations between perfect gas model and real gas model for gasdynamic waves.

Unsteady Flow Analysis Method for Automobile LED Headlamp Based on Massively Parallel CFD Considering the External Environment

2020 ◽  
Author(s):  
Touichirou Shiozawa ◽  
ChungGang Li ◽  
Takuji Nakashima ◽  
Yukinobu Hiranaka ◽  
Makoto Tsubokura
Keyword(s):  
Unsteady Flow ◽  
Flow Analysis ◽  
External Environment ◽  
Massively Parallel ◽  
Analysis Method ◽  
Led Headlamp ◽  
Unsteady Flow Analysis ◽  
Parallel Cfd
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