Tham khảo tài liệu 'design and optimization of thermal systems episode 2 part 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Numerical Modeling and Simulation 297 may be coupled with the modeling of fluid flow adjacent to the rod and other parts of the system to complete the model of a given system. . Consider heat conduction in a two-dimensional rectangular region of length m and width m. The dimension in the direction normal to this region may be taken as large. The dimensionless temperature is given as at one of the longer sides and as at the others. Solve the governing Laplace equation by the SOR method and determine the optimum relaxation factor. Discuss how in actual practice such a simulation may be linked with those for other parts of the system. . Consider the fan and duct system given in Example . Vary the zeroflow pressure given as 80 in the problem and the zero-pressure flow rate given as 15 here by 20 . Discuss the results obtained. Are they consistent with the physical nature of the problem as represented by the equations . Show the information-flow diagram for Problem . Also draw the information-flow diagram for the simulation of Problem . Do not solve the equations just explain what approach you will use. 5 Acceptable Design of a Thermal System A Synthesis of Different Design Steps INTRODUCTION In the preceding chapters we discussed the main aspects involved in the design of a thermal system. An acceptable or satisfactory design must satisfy the given requirements for the system and must not violate the limitations or constraints imposed by the application materials safety environmental effects and other practical considerations. At this stage we are not concerned with the optimization of the system and are largely interested in obtaining a feasible design. Though any design that meets the given requirements and constraints may be adequate for some applications it is generally desirable to seek a domain of acceptable designs from which an appropriate design is selected on the basis of cost ease of fabrication availability of .
