Mochizuki & Murata Lab. / Tokyo University of Agriculture and Technology
Mochizuki & Murata Lab. / Dept. of Mechanical Systems Engineering / Tokyo University of Agriculture and Technology
Japanese Page
Mochizuki & Murata Lab. / Tokyo University of Agriculture and Technology
HOME
Members
Research topics
information(lab. members only)
Links
How to access
Contact us

Tokyo University
of Agriculture and Technology
Thermal Fluids Engineering Lab.,
Dept. of Mechanical Systems Engineering
Murata Lab.

2-24-16 Naka-cho Koganei-city
Tokyo, Japan, 184-8588
[MAIL]
webadmin
[AtMark]mmlab.mech.tuat.ac.jp
Dept. of Mechanical Systems Engineering
Tokyo University of Agriculture and Technology

Flow Instability in Expanding Concentric Annular Flow-Passage with Rotating Inner-Wall （Rotating Machinery，Complicated Turbulent Heat Transfer）
　 An annular flow passage with a rotating inner wall is widely seen in many industrial apparatuses. In this type of passages, the flow is disturbed by the multiple reasons: the centrifugal forces due to the streamline curvature in the through-flow and circumferential directions, the centrifugally driven flow in the through-flow direction depending on the passage inclination, and the adverse pressure gradient due to the flow-passage expansion resulting in the flow separation. In this study, heat and fluid flow in this type of annular flow passage was investigated using the large eddy simulation and the particle tracking velocimetry. The results showed the three-dimensionally varying complicated vortex structure in this type of flow passages.


(a) Concave-type flow passage

(b) Convex-type flow passage

(c) Conical flow passage

Heat and Fluid Flow in Expanding Concentric Annular Flow-Passage with Rotating Inner-Wall[1,2].




Flow visualization in Expanding Concentric Annular Concave Flow-Passage with Rotating Inner-Wall[2].


References

[1] A. Murata and K. Iwamoto, Heat and Fluid Flow in Expanding Concentric Annular Flow-Passage with Rotating Inner-Wall, Proc. of Int. Conf. on Heat Transfer(IHTC-14), Washington D.C., US(2010), IHTC14-22403, pp.1-10.

[2] Murata, A. and Iwamoto, K., Heat and Fluid Flow in Cylindrical and Conical Annular Flow-Passages with Through Flow and Inner-Wall Rotation, Int. J. Heat and Fluid Flow, Vol.32 No.2(2011), pp.378-391.

[3] Saito, H., Murata, A., Ikegaya, T., and Iwamoto, K., 2D-PTV Measurement of Expanding Concentric Annular Flow with Rotating Inner-Wall, Journal of Flow Visualization and Image Processing, Vol.17 No.3(2009), pp.243-254.

[4] Ohsawa, A., Murata, A., and Iwamoto, K., Contribution of advetion, turbulent transport and diffusion terms to Nusselt number and torque coefficient in Taylor-Couette flow, J. of Thermal Science and Technology, Vol.11, No.2(2016),(13pages).

[5] Ohsawa, A., Murata, A., and Iwamoto, K., Through-flow effects on Nusselt number and torque coefficient in Taylor-Coutte-Poiseuille flow investigated by large eddy simulation, J. of Thermal Science and Technology, Vol.11, No.2(2016),(12pages).
Mochizuki & Murata Lab. / Tokyo University of Agriculture and Technology
｜Home｜Member List｜Research Topics｜Information(Lab. Members Only)｜Links｜How to Access｜-----｜
COPYRIGHT (C)TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY., ALL RIGHTS RESERVED.