Dynamics of a vapor bubble inside a vertical rigid cylinder with and without a deposit rib

• Autorzy: Nourbakhsh A. , Rouzbahani F.
• Języki publikacji: EN

Abstrakty

EN

In this paper, the dynamics of a vapour bubble generated due to local energy input inside a vertical rigid cylinder and in the absence of buoyancy forces was investigated. Different ratios of the diameter of the rigid cylinder up to the maximum radius of the bubble were considered. The boundary integral equation method was employed for numerical simulation of the problem. The results show that during the collapse phase of the bubble inside a vertical rigid cylinder, two liquid micro jets are developed on the top and bottom sides of the vapor bubble and are directed inward. It is found that by increasing the ratio of the cylinder diameter to the maximum radius of the bubble, the rate of the growth and collapse phases of the bubble increases and the lifetime of the bubble decreases. The results also show that an increase in the thickness of the deposit rib inside a vertical rigid cylinder slightly decreases the lifetime of the bubble.

Słowa kluczowe

EN

vapour bubble; vertical rigid cylinder; deposit rib; boundary element method

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2016
• Tom: Vol. 68, nr 2
• Strony: 113--132
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Nourbakhsh A.

• Department of Mechanical Engineering Bu-Ali Sina University Hamedan, Iran

autor

Rouzbahani F.

• Department of Mechanical Engineering Hamedan branch, Islamic azad University Hamedan, Iran

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.