Influence and CFD analysis of cooling air velocity on the purification of aqueous nickel sulfate solutions by freezing

AIChE Journal ◽  
2017 ◽  
Vol 64 (1) ◽  
pp. 200-208 ◽  
Author(s):  
Mehdi Hasan ◽  
Roman Filimonov ◽  
Miia John ◽  
Joonas Sorvari ◽  
Marjatta Louhi-Kultanen
Keyword(s):  
Nickel Sulfate ◽  
Cfd Analysis ◽  
Air Velocity ◽  
Sulfate Solutions ◽  
Cooling Air

CFD-Analysis of Coverplate Receiver Flow

1996 ◽  
Author(s):  
Oliver Popp ◽  
Horst Zimmermann ◽  
J. Kutz
Keyword(s):  
Turbine Rotor ◽  
Geometrical Parameters ◽  
Receiver Design ◽  
Cfd Analysis ◽  
Efficiency Improvement ◽  
System Efficiency ◽  
Cfd Simulations ◽  
Air Supply ◽  
Cooling Air ◽  
Contour Design

The flow field in a preswirled cooling air supply to a turbine rotor has been investigated by means of CFD-simulations. Coefficients for system efficiency are derived. The influences of various geometrical parameters for different configurations have been correlated with the help of appropriate coefficients. For some of the most important geometrical parameters of the coverplate receiver design recommendations have been found. For the preswirl nozzles the potential of efficiency improvement by contour design is highlighted.

Numerical Study on Structure Thermal Protection of Aerospace Plane

2014 ◽  
Vol 900 ◽  
pp. 814-817
Author(s):  
Shuang Chen ◽  
Qing Feng Zhang
Keyword(s):  
Thermal Protection ◽  
Numerical Study ◽  
Thermal Protection System ◽  
Protection System ◽  
Flow Density ◽  
Air Velocity ◽  
The Status ◽  
Flight Parameters ◽  
Cooling Air ◽  
Aerospace Plane

The letter relying on the status of existing thermal protection system and existing flight parameters, appropriate metal thermal protection system being able to reproduced are designed; according to the distribution of heat-flow density we make certain the structure and thickness of the heat shield, structure of cooling bed and pressure of cooling air, velocity of flow and so on. The distributions of temperature of points on the nose and the inside of skin are calculated.

Partial Molal Volumes of Nickel Sulfate Solutions

1942 ◽  
Vol 64 (10) ◽  
pp. 2379-2379
Author(s):  
R. W. Gelbach ◽  
H. M. Louderback
Keyword(s):  
Nickel Sulfate ◽  
Sulfate Solutions ◽  
Partial Molal Volumes ◽  
Molal Volumes

CFD Analyses of HPT Blade Air Delivery System With and Without Impellers

2011 ◽  
Author(s):  
Charles Wu ◽  
Boris Vaisman ◽  
Kevin McCusker
Keyword(s):  
Delivery System ◽  
Pressure Loss ◽  
Aerodynamic Performance ◽  
Operating Conditions ◽  
Manufacturing Cost ◽  
Cfd Analysis ◽  
Swirl Ratio ◽  
Blade Cooling ◽  
Supply Pressure ◽  
Cooling Air

In the design of a HPT blade cooling air delivery system, sufficient supply pressure is required to guarantee HPT blades are working properly in the high temperature environment. A design goal is to set a pressure level at the blade inlet that will prevent the ingestion of gaspath air into the blades which is caused by pressure fluctuations under various operating conditions and other uncertainties. Traditional 1-D design tools are not sophisticated enough for detailed system analysis. Therefore, CFD (Computational Fluid Dynamics) analysis was utilized for designing HPT blade cooling air delivery system to guarantee meeting the supply pressure requirement. Two HPT blade air delivery systems were explored. The baseline is a cooling air delivery system without radial impellers. It provides a simplistic design at low manufacturing cost, however CFD analysis shows that the system has a larger pressure loss at the broach slot entrance and delivers low supply pressure. The alternative is a cooling air delivery system with radial impellers. CFD analysis shows that the system with impellers results in much better aerodynamic performance at the broach slots and provides high supply pressure, but comes with the price of high manufacturing cost and lower TSFC due to the parasitic drag induced by impellers. For the alternative approach, three high solidity impeller designs were analyzed. The alternative approaches analyzed had inlet angles of 0°, 30°, 90° and exit angles of 0°, respectively. Comparisons of detailed aerodynamic performance are presented in the paper. CFD simulation reveals that the source of pressure loss without impellers is caused by mismatch of the swirl ratio at broach slot entrance. CFD results show that a system with radial impellers produces a better matched swirl ratio at broach slot entrance. Radial impellers enhance aerodynamic performance and improve pressure distribution within broach slots.

CFD Analysis of Coverplate Receiver Flow

1998 ◽  
Vol 120 (1) ◽  
pp. 43-49 ◽  
Author(s):  
O. Popp ◽  
H. Zimmermann ◽  
J. Kutz
Keyword(s):  
Turbine Rotor ◽  
Geometric Parameters ◽  
Receiver Design ◽  
Cfd Analysis ◽  
Efficiency Improvement ◽  
System Efficiency ◽  
Cfd Simulations ◽  
Air Supply ◽  
Cooling Air ◽  
Contour Design

The flow field in a preswirled cooling air supply to a turbine rotor has been investigated by means of CFD simulations. Coefficients for system efficiency are derived. The influences of various geometric parameters for different configurations have been correlated with the help of appropriate coefficients. For some of the most important geometric parameters of the coverplate receiver, design recommendations have been made. For the preswirl nozzles, the potential of efficiency improvement by contour design is highlighted.

Research of Flow Field for Irradiation Box of Cable Ultraviolet Cross-Linking

2013 ◽  
Vol 274 ◽  
pp. 208-211
Author(s):  
Jia Dong Tang ◽  
Yi Ping Lu ◽  
Jia De Han ◽  
Zuo Min Wang
Keyword(s):  
Flow Field ◽  
Three Dimensional ◽  
Transfer Effect ◽  
Cross Linking ◽  
Solid Model ◽  
Distribution Characteristics ◽  
Air Velocity ◽  
Large Space ◽  
Cooling Air ◽  
Ventilation Scheme

In order to analyze the cooling air velocity and pressure distribution characteristics in a ventilation scheme presented for the irradiation box of cable ultraviolet cross-linking, the three-dimensional solid model of the irradiation box was established, its flow field was simulated by software FLUENT according to computational fluid dynamics principle under some calculation conditions. The results show that the air velocity around the cable is higher, enhancing convective heat transfer effect, the irradiation box large space is under negative pressure condition.

Interaction of micas with nickel sulfate solutions

2008 ◽  
Vol 53 (1) ◽  
pp. 11-21 ◽  
Author(s):  
V. N. Makarov ◽  
I. P. Kremenetskaya ◽  
D. V. Makarov ◽  
O. P. Korytnaya ◽  
T. N. Vasil’eva
Keyword(s):  
Nickel Sulfate ◽  
Sulfate Solutions
Sign in / Sign up

Export Citation Format

Share Document