本文選題：取暖器　切入點：熱場　出處：《廣東工業(yè)大學》2012年碩士論文　論文類型：學位論文

【摘要】：取暖器的設計涉及結構、空氣動力學、傳熱學的理論,因企業(yè)設計技術水平和成本的限制,很少有企業(yè)會詳細的計算各種參數對取暖器性能的影響,大多是依靠經驗進行設計。在完成設計工作后,需要生產物理樣機來測試產品的性能,然后根據試驗數據去指導設計更改。由于對取暖器內部熱場分布及其原因不清楚,這種對產品進行的改進具有一定的主觀性和盲目性。因此,實驗的過程需要反復幾遍,才能得到合格的產品,增加了產品研發(fā)周期和成本。 利用計算流體動力學理論,結合傳熱學基本原理,可以準確地模擬產品的熱場分布情況,但由于這種分析對理論要求較高,一般工程師很難完成,這就出現了先進技術無法在實際生產中發(fā)揮作用的現象。針對這種情況,本文以取暖器為研究對象,以Solidworks Flow Simulation為分析工具,研究取暖器的熱場分析技術,尋找影響取暖器溫度分布的因素,并提出產品改進方案。本文主要研究內容如下： (1)建立取暖器熱場分析的數學模型。根據產品的特點,分析取暖器內部熱量傳遞的方式,構建每種傳熱模式的解析計算方法。針對解析算法的難點,研究數值計算方法在取暖器傳熱過程的應用。 (2)研究對流式取暖器的熱場分析方法。分析在熱場分析中需要考慮的關鍵的參數,找出當前產品存在的問題,發(fā)掘問題產生的原因。 (3)研究輻射式取暖器的熱場分析方法。以市面上常見的反射式取暖器為例,研究反射罩參數的變化對取暖器熱場的影響。 (4)研究油汀取暖器熱場分析技術。油汀取暖器工作時同時發(fā)生空氣和導熱油兩種流體的自然對流運動,研究兩種流動的形式及其影響因素,為油汀取暖器產品優(yōu)化提供參考。 (5)為了降低取暖器熱場分析的難度,提高分析效率,研究了Flow Simulation二次開發(fā)技術,在三種取暖器熱場分析技術的基礎上,建立專門應用于取暖器的熱場分析平臺。 (6)根據對流式取暖器熱場分析結果,針對其存在的問題,利用取暖器熱場分析平臺,對取暖器進行改進分析,驗證分析平臺的可靠性,同時提高取暖器的安全性能和取暖效率。 本文對三種主要類型的取暖器進行研究,為產品熱場分析提供一種可靠的方法,有利于取暖器行業(yè)研發(fā)水平的提高。在總結取暖器熱場分析方法的基礎上,研究了基于Flow Simulation的取暖器熱場分析平臺的開發(fā)方法,從而使熱場分析的流程簡化,以降低分析難度,減少出錯,提高分析效率,也為企業(yè)定制自己產品的研發(fā)模式提供一種思路。本文提出的取暖器改進方法,對取暖器的設計開發(fā)具有普遍的指導意義,有助于企業(yè)研發(fā)從經驗設計向數字化設計的轉變。
[Abstract]:The design of the heater involves the theory of structure, aerodynamics, heat transfer. Because of the limitation of the technical level and cost of the enterprise design, few enterprises will calculate the influence of various parameters on the performance of the heater in detail. Most of the design is based on experience. After the design is completed, a physical prototype is produced to test the performance of the product, and then to guide the design changes according to the test data. Because the distribution of heat field inside the heater and its reasons are not clear, The improvement of the product is subjective and blind. Therefore, the process of the experiment needs to be repeated several times in order to get the qualified product and increase the cycle and cost of product research and development. By using the theory of computational fluid dynamics and the basic principles of heat transfer, the thermal field distribution of the product can be accurately simulated. However, due to the high theoretical requirements for this analysis, it is difficult for the general engineer to complete the analysis. As a result, the advanced technology can not play a role in the actual production. In this paper, the thermofield analysis technology of the heater is studied with Solidworks Flow Simulation as the research object and Solidworks Flow Simulation as the research object. The main contents of this paper are as follows: (1) to find out the factors that affect the temperature distribution of the heater, and to put forward the product improvement scheme. 1) establish the mathematical model of heat field analysis of heater. According to the characteristics of the product, analyze the way of heat transfer inside the heater, and construct the analytical calculation method of each heat transfer mode. The application of numerical calculation method in heat transfer process of heater is studied. 2) the thermal field analysis method of flow heater is studied, the key parameters in thermal field analysis are analyzed, the problems existing in current products are found out, and the causes of the problems are found out. (3) the thermal field analysis method of radiative heater is studied. The influence of the parameters of the reflector on the thermal field of the radiator is studied by taking the reflex heater as an example. The natural convection movement of both air and heat conduction oil is observed simultaneously, and the two kinds of flow forms and their influencing factors are studied, which provides a reference for the optimization of the product of the oil heater. 5) in order to reduce the difficulty of heat field analysis of heater and improve the efficiency of analysis, the secondary development technology of Flow Simulation is studied. Based on three kinds of thermal field analysis technology of heater, a special analysis platform for heat field is established. 6) according to the results of thermal field analysis of flow heater, according to its existing problems, the heater is improved and analyzed by using the platform of heat field analysis of heater, the reliability of the analysis platform is verified, and the safety performance and heating efficiency of the heater are improved at the same time. In this paper, three main types of heaters are studied to provide a reliable method for product thermal field analysis, which is beneficial to the improvement of the research and development level of the heater industry. The development method of heating field analysis platform based on Flow Simulation is studied, which simplifies the process of thermal field analysis, reduces the difficulty of analysis, reduces errors and improves the efficiency of analysis. It also provides a train of thought for enterprises to customize their own product R & D mode. The improved method of heater proposed in this paper has universal guiding significance for the design and development of heater, and is helpful to the transformation of enterprise R & D from empirical design to digital design.
【學位授予單位】：廣東工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH122

【引證文獻】

相關碩士學位論文 前1條

1 劉濤濤;基于TRIZ的空氣動力汽車關鍵零部件研究[D];山東大學;2013年

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本文編號：1609509