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題名 | 搖變流體結構動力學模型參數之決定=Determination of the Parameters in the Structural Kinetics Model for Thixotropic Fluids |
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作者 | 毛慶豐; | 書刊名 | 南臺學報 |
卷期 | 34:1 2009.07[民98.07] |
頁次 | 頁1-11 |
分類號 | 440.137 |
關鍵詞 | 搖變性質; 複雜流體; 結構動力學模型; Thixotropy; Complex fluid; Structural kinetics model; |
語文 | 英文(English) |
中文摘要 | 複雜流體黏度隨時間變化曲線常以結構動力學模型來描述。結構動力學模型參數之決定係將數學 式線性化,再以曲線配合方式得到參數值。傳統線性化之方式常因平衡黏度數值之擾動而造成參數估 計之錯誤。本論文提出兩種有別於傳統線性化之方法來求得模型參數值,並以電腦產生含誤差之數據 來比較驗證新方法之適用性。整體模型參數評估之結果顯示如欲求得正確之參數值需採取兩步驟:第 一步,以傳統線性化之方式決定反應級數;第二步,速率常數及初始對平衡黏度比值可以新提出之線 性方法求得。 |
英文摘要 | The structural kinetics model is often used to describe the time-dependent viscosity profile of complex fluids. In order to improve the estimation of the model parameters, two methods other than the conventional method were proposed in this paper. Computer generated error-containing data sets were used to evaluate these methods. The overall performance of these methods suggests that a two-step approach should be adopted. In the first step, the kinetics order of the model is determined by the conventional method, while in the second step, the rate constant and the initial to equilibrium viscosity ratio can be estimated by one of the two newly proposed methods. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。