An experimental study on compressible cylindrical cavity flows

2016 ◽  
Author(s):  
Kung-Ming Chung ◽  
Kuan-Huang Lee ◽  
Vadim Lebiga ◽  
Vitali Zinoviev
Keyword(s):  
Experimental Study ◽  
Cylindrical Cavity ◽  
Cavity Flows

scholarly journals Self-sustained oscillation for compressible cylindrical cavity flows

2017 ◽  
Vol 30 (4) ◽  
pp. 1294-1299 ◽  
Author(s):  
Kung-Ming CHUNG ◽  
Kuan-Huang LEE ◽  
Keh-Chin CHANG
Keyword(s):  
Cylindrical Cavity ◽  
Sustained Oscillation ◽  
Cavity Flows

Experimental Study on Double-Diffusive Convection During Solidification of NH4Cl-H2O Hypereutectic Solution in Cylinder Cavity

2008 ◽  
Author(s):  
Bofeng Bai ◽  
Jun Lu ◽  
Lei Zhang ◽  
Heng Li
Keyword(s):  
Experimental Study ◽  
Cylindrical Cavity ◽  
Particle Image ◽  
Solidification Process ◽  
Double Diffusive Convection ◽  
Diffusive Convection ◽  
Image Velocimetry ◽  
Diffusive Interface ◽  
Contrary Direction ◽  
Double Diffusive

In order to reveal the law of double-diffusive convection of multi-compound solution in cylindrical cavity, experimental study on solidification of NH4Cl-H2O hypereutectic solution has been performed by using particle image velocimetry (PIV). The influencing factors of flow patterns and intensity are also analyzed. The results show that: 1) There are two approximately symmetric main convection cells in the liquid which are down along the sidewall and up along the center of the cylindrical cavity. Meanwhile, there are also two secondary cells on the bottom corner of cylindrical cavity, which flow in contrary direction to that of the main ones; 2) Due to the release of water during the solidification process, solute layers and diffusive interface are developed in the liquid and will be disappeared in the end; 3) The cooling temperature and the initial concentration have significantly effects on the flow velocity, solute layers and diffusive interface.

Thermal Convection in Tilted Cylindrical Cavities Embedded in Rocks

Volume 1 ◽  
2004 ◽  
Author(s):  
F. Sa´nchez ◽  
A. Medina ◽  
F. J. Higuera
Keyword(s):  
Experimental Study ◽  
Thermal Convection ◽  
Cylindrical Cavity ◽  
Solid Rock ◽  
Saturated Porous Medium ◽  
Vertical Temperature Gradient ◽  
Vertical Temperature ◽  
Fluid Saturated Porous Medium ◽  
Cylindrical Cavities ◽  
Temperature And Pressure

We present a theoretical and experimental study of the thermal convection in a fluid-filled, tilted cylindrical cavity and in a fluid-saturated porous medium filling a cylindrical cavity embedded in a solid slab (solid rock) which has a constant vertical temperature gradient far from the cavity. Closed-form, analytical solutions are obtained for the temperature field in the solid and for the velocity, temperature and pressure within the cavity.

Experimental study of paraffin melting in cylindrical cavity with central electric heating rod

2019 ◽  
Vol 237 ◽  
pp. 264-271 ◽  
Author(s):  
Shuai Wang ◽  
Yun Guo ◽  
Changhong Peng ◽  
Wanhong Wang
Keyword(s):  
Experimental Study ◽  
Cylindrical Cavity ◽  
Electric Heating

A Numerical and Experimental Study of Laminar Unsteady Lid-Driven Cavity Flows

2017 ◽  
Author(s):  
K. M. Akyuzlu
Keyword(s):  
Experimental Study ◽  
Steady State ◽  
Flow Field ◽  
Numerical Study ◽  
Working Fluid ◽  
Cavity Flows ◽  
Square Cavity ◽  
Measured Velocity ◽  
Driven Cavity ◽  
Numerical Predictions

An experimental and numerical study was conducted to study unsteady lid-driven cavity flows. More specifically, the development of the circulation patterns inside a square cavity due to the movement of a rigid impermeable lid at constant velocity was observed experimentally and predicted numerically by CFD codes. Particle Image Velocimeter (PIV) technique was used to determine the flow field as it develops from stagnation to steady state inside a one inch (25.4 mm) square cavity driven by an impermeable lid. To avoid the three dimensional effects on the primary vortex, the depth of the cavity is taken to be 5 inches (127 mm). Working fluid is water and it is seeded with hallow glass spheres with 10 microns diameter. Experimental study was conducted for different lid velocities corresponding to Reynolds numbers for laminar to intermittent turbulence. The numerical study was carried out using commercial and in-house CFD codes for the steady state case, and using a commercial CFD code for the unsteady case. The predictions of unsteady flow field inside the two-dimensional square cavity were made using these codes which employ second order accurate (temporally and spatially) implicit numerical schemes. A time and mesh independence study was carried out to determine the optimum mesh size and time increment for the unsteady case study. Comparisons of the numerically predicted and experimentally measured velocity fields are made for steady and unsteady cases. The results indicate that the numerical predictions capture the characteristics of the circulation inside the cavity reasonably well however the magnitude of the velocities are underestimated.

Thermal performance comparison between Al2O3/oil and SiO2/oil nanofluids in cylindrical cavity receiver based on experimental study

2018 ◽  
Vol 129 ◽  
pp. 652-665 ◽  
Author(s):  
R. Loni ◽  
E. Askari Asli-Ardeh ◽  
B. Ghobadian ◽  
A.B. Kasaeian ◽  
Evangelos Bellos
Keyword(s):  
Experimental Study ◽  
Thermal Performance ◽  
Cylindrical Cavity ◽  
Performance Comparison
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