17137

52 گلپايگان

كارشناسي ارشد

طراحي كاربردي

اصفهان : دانشگاه صنعتي اصفهان

1395

84ص: مصور، جدول، نمودار

1400/11/11

كتابنامه

مهندسي مكانيك

فني مهندسي گلپايگان

1400/11/12

52

به فايل مراجعه شود.

Abstract Among the problems with submersible torpedoes is the discussion of the friction force of contact with water, and in the sense of the high post-war power in these missiles. In the new generation of torpedoes, the idea was that, if a torpedo can move in contact with the surface of the water, in the clouds of air or water vapor, it does not exist and moves at a much higher pace. In the most advanced torpedoes, the current method is the sodium injection at the tip of the torpedo that is produced by the sodium reaction with H2 gas, which can create the desired bubble cloud. The idea behind this project is to use ultrasonic technology instead of sodium metal injection. Therefore, using the relevant physical foundations and explaining the theories in this particular case, a sample of the vibrating cap is made and interacted with water. According to early hypotheses about micro-events at the interface with water and shell shells (creating fine bubbles, cavitation, or the effects of cutting viscosity and shear strength, etc.), the macroscopic effects observed in the laboratory sample indicate that the creation of ultrasonic vibrations At the tip of the torpedo it can be effective in reducing drag force.

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