【Daily Question】Theoretical Foundation 2020.11.17
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Multiple-choice question: The question is shown in the image ( ). Answer: B. Hint: An additional reward will be given to those who can explain the solution process; the answer can be submitted there
During the process of calculating thermal conductivity values, when dividing the area and determining nodes, each node can be regarded as a micro-element centered on it, and the temperature of the node represents the average temperature of that micro-element. Therefore, the statement in option A is correct, while the statement in option B is incorrect. Furthermore, the finer the grid segmentation and the more nodes there are, the more adjustable the size of the area represented by each node; therefore, the statement in option C is correct. The solution of the discrete system of equations for the nodes represents the solution of the original control equations, and the statement in item D is also correct.