Abstract
A spiral flow using an annular slit connected to a conical cylinder does not need special device to generate a tangential velocity component of the flow and differs from swirling flows. Pressurized fluid is supplied to an annular chamber and injected into the convergent nozzle through the annular slit. The annular jet develops into the spiral flow. In the present study, a spiral jet discharged out of nozzle exit was obtained by using a convergent nozzle and an annular slit set in nozzle inlet, and the effect of annular slit geometry on characteristics of the spiral jet was investigated by using a Laser Doppler Velocimeter (LDV) experimentally. Furthermore, velocity distributions of the spiral jet were compared with those of a normal jet.
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Horii, K, Matsumae, Y, Cheng, X M, et al. Focusing Phenomena and Stability of Spiral-Flow Jet. Trans. Japan Soc. Aero. Space Sci., 1991, 33(102): 141–153
Takei, M, Horii, K, Hashimoto, B, et al. High Stability of Spiral Jet - Relations between Axial Velocity Distribution and Stability. J. of the Japan Soc. for Aeronautical and Space Sciences, 1995, 43(494): 9–16
Miyazaki, K, Chen, G, Kudamatsuo, J, et al. High-Efficiency Soil Transportation with Spiral Airflow. Japan Soc. Aero. Space Sci., 1999, 42(137): 105–111
Ueda, H, Sakai, M, Horii, K, et al. Study of Swirling Pneumatic Transport of Granule in a Horizontal Pipe. Trans. Jpn. Soc. Mech. Eng., 2001, 67(664): 3011–3017
Horii, K, Sawazaki, H, Matsumae, Y, et al. New Continuous System for Dispersion and Encapsulation of Submicron Powders Using Spiral Flow. ASME-Industrial Application of Fluid Mechanics, 1990, FED-100: 25–30
Takei, M, Horii, K, Hashimoto, B, et al. Cutting of Soft Materials Using of Spiral Water Jet. J. of the Japan Soc. for Aeronautical and Space Sciences, 1994, 42(490): 36–47
Horii, K, Matsumae, Y, Ohsumi, K, et al. Novel Optical Fiber Installation by Use of Spiral Flow. J of Fluids Engineering, 1992, 114: 373–378
Horii, K, Matsumae, Y, Cheng, X M, et al. A Study of Spiral Flow (Part 4) The Effect of Radial Reynolds Number of Spiral Flow on Plasma Deposition of Pipe. Trans. Japan Soc. Aero. Space Sci., 1990, 32(98): 165–175
Bhagwat, M J, Leishman, J G. Correlation of Helicopter Rotor Tip Vortex Measurements. AIAA Journal, 2000, 38(2): 301–308
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Matsuo, S., Lee, KH., Oda, S. et al. Effect of annular slit geometry on characteristics of spiral jet. J. of Therm. Sci. 12, 225–230 (2003). https://doi.org/10.1007/s11630-003-0072-2
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DOI: https://doi.org/10.1007/s11630-003-0072-2