大功率電子器件蒸發(fā)冷卻電極溫度場(chǎng)的計(jì)算
A CALCULATION ON THE TEMPERATURE FIELD OF THE VAPORIZATION COOLING ELECTRODE USED IN HIGH POWER ELECTRON DEVICE
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摘要: 陽(yáng)極或收集極的散熱問(wèn)題是大功率電子器件的基本問(wèn)題之一。近廿年來(lái)雖發(fā)展了高效率的蒸發(fā)冷卻散熱結(jié)構(gòu);但其設(shè)計(jì)仍停留在模擬和經(jīng)驗(yàn)設(shè)計(jì)階段。本文給出了蒸發(fā)冷卻電極的數(shù)學(xué)模型及其求解方法;討論了這種數(shù)學(xué)物理方程的非線性和多值解性質(zhì);并以典型的大功率電子管蒸發(fā)冷卻陽(yáng)極為例,用數(shù)字計(jì)算機(jī)求解出內(nèi)部溫度場(chǎng)的分布;為蒸發(fā)冷卻電極的設(shè)計(jì)提供了分析根據(jù)。據(jù)此可進(jìn)行結(jié)構(gòu)設(shè)計(jì),估價(jià)給定結(jié)構(gòu)的散熱能力。
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關(guān)鍵詞:
Abstract: The heat dissipation of anodes or collectors is one of the essential problems in the design of high power electron device. In recent twenty years high efficient vaporization cooling structure has been developed, but its design is still done by means of simulation or empirically. In this paper, a mathematical model for the vaporization cooling eleetrode and its solving method are provided. The nonlinear and multi-valued proporties of this mathematical physical equation are discussed. As an example, a numerical solution of inner temperature field in a typical vaporization cooling electrode, an anode of high power electron tube has been given with digital computer. On the basis of these results, the design of vaporization cooling electrode and estimation of its heat dissipation capability are possible. -
李子才,一類非線性熱傳導(dǎo)方程的守恒型格式與逐次超松弛牛頓法最優(yōu)松弛因子的選取(尚未發(fā)表). -
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