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題 名 | 含砲口制退器之砲口暫態流場數值研究=Numerical Study of Muzzle Transient Flow of Howitzer with Muzzle Brake |
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作 者 | 戴昌賢; 羅四維; 苗志銘; 蘇耀光; | 書刊名 | 力學 |
卷 期 | 15:2 1999.12[民88.12] |
頁 次 | 頁111-125 |
分類號 | 595.5 |
關鍵詞 | 砲口制退器; 中間彈道; 馬赫盤; 筒狀震波; Muzzle brake; Intermediate ballistic; Mach disk; Barrel shock; |
語 文 | 中文(Chinese) |
中文摘要 | 本文採用上風TVD(Total Variation Diminishing)的有限體積法(Finite Volume Method),建立三維、無黏性、依時性、多區塊及動態網格系統之模式,模擬軸對稱震波管 噴流及砲口流場等複雜問題。本研究首先模擬震波管噴流,並將所得之流場結構及震波發展 現象等結果,與實驗值比對,獲得良好之驗證。同時藉由此經驗,模擬含砲口制退器之砲口 流場,獲得砲管內因彈體高速移動產生之先導震波現象、高溫高壓之發射藥氣體於砲口形成 之噴流結構及制退器排氣導孔對後方震波壓力傳導之效應等良好結果。 |
英文摘要 | The complex problems in jet flow of shock tube and muzzle brake have been numerically simulated in this paper by using total variation diminishing (TVD) finite-volume scheme with a three-dimensional inviscid, time-dependent model, and multi-block, moving grid system. At first, the flow structure and the blast wave development of an axial-symmetrical shock tube have been successfully simulated by this code. The numerical results were compared with experimental measurement data excellently. Then the muzzle flow-field with muzzle brake was simulated with the aforementioned experience. Those complex phenomena including precursor shock caused by quickly moving of projectile, muzzle flow structure produced by propellant gases, affection of blast wave behind muzzle area which formed by leading angle of muzzle brake, etc, can be observed clearly by these simulations. |
本系統中英文摘要資訊取自各篇刊載內容。