本文關(guān)鍵詞： 攪拌效果 PIV 開啟渦輪式攪拌器 攪拌流場 優(yōu)化　出處：《上海應(yīng)用技術(shù)學(xué)院》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：攪拌設(shè)備大量應(yīng)用于化工、制藥、食品、采礦、造紙、涂料、冶金、廢水處理等行業(yè)中。攪拌是攪拌設(shè)備在攪拌過程中一個重要的單元操作,是通過攪拌器把旋轉(zhuǎn)的機械能轉(zhuǎn)化為動能,通過攪拌可以促進流體的反應(yīng)速度和流體的混合時間。由于攪拌效率和攪拌過程的成本由攪拌效果決定,而攪拌效果受攪拌器的結(jié)構(gòu)參數(shù)及操作參數(shù)的影響,故對攪拌設(shè)備和攪拌理論的研究具有重要意義。本文利用Fluent軟件模擬了開啟渦輪式攪拌器在水中的攪拌過程,并用粒子成像技術(shù)(PIV)分析了攪拌釜內(nèi)的流場以對攪拌結(jié)果進行實驗驗證,從而指導(dǎo)攪拌器的設(shè)計和優(yōu)化。本文的主要工作及研究包括：利用Solidworks對開啟渦輪式攪拌器進行三維建模,并導(dǎo)入workbench 14.0對其進行數(shù)值模擬,分析了開啟渦輪式攪拌器在釜內(nèi)的攪拌流場,通過模擬不同轉(zhuǎn)速下的功率驗證了理論功率推導(dǎo)公式的正確性。通過粒子成像測速儀(PIV),對攪拌釜內(nèi)的流場進行實驗研究并測定釜內(nèi)流體的流動速度,將實驗數(shù)據(jù)和模擬數(shù)據(jù)進行比較以驗證模擬的正確性。通過對常用開啟渦輪式攪拌器在不同結(jié)構(gòu)參數(shù)及操作參數(shù)進行模擬分析,并對比各參數(shù)下的攪拌功率,以確定各參數(shù)下的最優(yōu)解。通過對優(yōu)化前后的攪拌器進行實驗和模擬比較,以驗證優(yōu)化的正確性。
[Abstract]:Mixing equipment is widely used in chemical, pharmaceutical, food, mining, papermaking, coatings, metallurgy, wastewater treatment and other industries. The rotating mechanical energy is converted into kinetic energy through the agitator, and the reaction speed and mixing time of the fluid can be promoted by stirring. Since the agitation efficiency and the cost of the stirring process are determined by the mixing effect, The agitation effect is influenced by the structure and operation parameters of the agitator, so it is of great significance to study the mixing equipment and theory. In this paper, the stirring process of the turbo agitator in water is simulated by using Fluent software. The flow field in agitator was analyzed by particle imaging technique (PIV) to verify the results of agitation. So as to guide the design and optimization of agitator. The main work and research in this paper include: using Solidworks to model the turbo stirrer and introducing workbench 14.0 to simulate it. The agitation flow field of turbo agitator in kettle is analyzed. The correctness of the theoretical power formula is verified by simulating the power at different rotational speeds. The flow field in a stirred tank is experimentally studied by particle imaging velocimeter (PIV) and the flow velocity of the fluid in the stirred tank is measured. By comparing the experimental data with the simulated data to verify the correctness of the simulation, the common turbo stirrer is simulated and analyzed under different structure parameters and operating parameters, and the mixing power under each parameter is compared. In order to determine the optimal solution of each parameter, the correctness of the optimization is verified by the experiment and simulation of the agitator before and after the optimization.
【學(xué)位授予單位】：上海應(yīng)用技術(shù)學(xué)院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ051.72

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本文編號：1503016