本文關(guān)鍵詞： 波紋板 分離性能 數(shù)值模擬 實(shí)驗(yàn)研究　出處：《西安石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：波紋板是氣液分離器內(nèi)重要的分離元件,其通道內(nèi)的流體流動(dòng)是一種涉及氣液兩相相互作用,并且伴隨液滴的聚結(jié)和破碎等許多復(fù)雜物理現(xiàn)象的兩相分離運(yùn)動(dòng)。國內(nèi)對(duì)波紋板的研制主要依靠經(jīng)驗(yàn)設(shè)計(jì)和反復(fù)實(shí)驗(yàn),目前對(duì)氣液兩相在通道內(nèi)的流體力學(xué)特性以及分離過程中的理論化數(shù)學(xué)模型均鮮有報(bào)道�；谝旱蝿�(dòng)力學(xué)理論,對(duì)波紋板通道內(nèi)液滴的行為進(jìn)行了受力分析,將橫混模型引入波紋板氣液分離理論的研究中,建立了描述通道內(nèi)流動(dòng)過程的數(shù)學(xué)模型,推導(dǎo)出波紋板分離效率及壓降的理論計(jì)算公式;采用計(jì)算流體力學(xué)軟件FLUENT中適合彎曲流線流動(dòng)的RNG k-ε模型,對(duì)液滴粒徑按Rosin-Rammler函數(shù)分布的攜液氣體在不同入口氣流速度、板間距及波紋傾角組合下的流場進(jìn)行了模擬,考慮到氣流與液滴之間的相互作用,運(yùn)用DPM離散相模型對(duì)液滴的運(yùn)動(dòng)進(jìn)行跟蹤計(jì)算,得到各參數(shù)對(duì)分離效率、壓降的影響以及液滴的運(yùn)動(dòng)軌跡;研制開發(fā)波紋板氣液分離性能測試實(shí)驗(yàn)臺(tái),可實(shí)現(xiàn)最高氣流速度為18m/s,實(shí)驗(yàn)臺(tái)霧化系統(tǒng)穩(wěn)定,霧滴主要分布在100μm以下,可以對(duì)不同板間距、波紋傾角的波紋板進(jìn)行分離性能測試。實(shí)驗(yàn)針對(duì)波紋板的分離效率和壓降這兩個(gè)主要指標(biāo)與數(shù)值模擬結(jié)果進(jìn)行對(duì)比,從而驗(yàn)證了理論計(jì)算模型和數(shù)值模擬方法的可靠性。論文最后提出波紋板傾角參數(shù)設(shè)計(jì)時(shí)不宜超過45°等一些建議。將理論解析、數(shù)值模擬和實(shí)驗(yàn)測試三種方法結(jié)合起來,對(duì)波紋板內(nèi)氣液兩相分離過程進(jìn)行了深入的理論和實(shí)驗(yàn)研究,較為全面的掌握了波紋板氣液分離過程中的客觀規(guī)律,這不僅利于高效波紋板分離元件的開發(fā),而且對(duì)氣液分離器向高效、緊湊型發(fā)展有重要的意義。
[Abstract]:Corrugated plate is an important separation element in gas-liquid separator. The fluid flow in its channel is a kind of gas-liquid two-phase interaction. And the two-phase separation motion of many complicated physical phenomena, such as coalescence and breakage of droplets. The development of corrugated plates in China mainly depends on the experience design and repeated experiments. At present, there are few reports on the hydrodynamic characteristics of gas-liquid two-phase in the channel and the theoretical mathematical model in the separation process. Based on the droplet dynamics theory, the behavior of the droplet in the corrugated plate channel is analyzed. The transverse mixing model is introduced into the theory of gas-liquid separation of corrugated plates, and a mathematical model describing the flow process in the channel is established, and the theoretical calculation formulas for the separation efficiency and pressure drop of the corrugated plates are derived. A RNG k- 蔚 model suitable for bending streamline flow in computational fluid dynamics software FLUENT is used to simulate the flow field of liquid carrying gas distributed according to Rosin-Rammler function under different inlet airflow velocity, plate spacing and corrugated dip angle. Considering the interaction between the air flow and the droplet, the DPM discrete phase model is used to track the droplet motion, and the influence of the parameters on the separation efficiency, the pressure drop and the droplet trajectory is obtained. An experimental platform for testing the gas-liquid separation performance of corrugated plates is developed. The maximum gas velocity is 18 m / s. The atomization system is stable, the droplets are mainly distributed below 100 渭 m, and different plate spacing can be obtained. The separation performance of corrugated corrugated plate with dip angle is tested. The separation efficiency and pressure drop of corrugated plate are compared with the results of numerical simulation. The reliability of the theoretical calculation model and the numerical simulation method is verified. Finally, some suggestions are put forward that the design of the bellows inclination angle should not exceed 45 擄. The three methods of theoretical analysis, numerical simulation and experimental test are combined. The theoretical and experimental study on the gas-liquid two-phase separation process in the corrugated plate is carried out, and the objective law of the gas-liquid separation process of the corrugated plate is comprehensively grasped, which is not only conducive to the development of the high-efficiency corrugated plate separation element. Moreover, it is of great significance to the development of gas-liquid separator to high efficiency and compact type.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ028

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