PhD Thesis - staffweb - University of Greenwich

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PhD Thesis by John Ewer.of looping because of the new operators and functions provided for vector algebra. Thesefunctions include dot- and cross- product utilities.Original code for cell centre position calculationDO I = 1, NOCELLDO J = 1, 3CENTRE(I, J) = 0.0ENDDODO J = 1, 3DO K = 1, NPTCTY( CELTYP(I) )CENTRE(I, J) = CENTRE(I, J) + XYZCRD( CELPTS(I, K), J )ENDDOCENTRE(I, J) = CENTRE(I, J) / REAL( NPTCTY( CELTYP(I) ) )ENDDOENDDONew C++ code using a vector class methodsfor ( i=1; i
PhD Thesis by John Ewer.- The legacy system consisted of 107 source files that contained 158 routines. There were22,450 Lines-Of-Code (LOC) excluding comments.- The re-engineered system has 4 source and 13 header files and has 395 routines including classmember functions. There are 11,250 LOC in source files and 1,400 LOC in header files.The project statistics (See Table 3.8-1) indicate approximate durations of the individual stagesused during the re-engineering. The final stage (stage 9) has not been included becauseperfective and adaptive maintenance is ongoing. The project durations are measured in Person-Weeks (PW) where a Person-Week is defined as 5 work days for one system developer.TABLE 3.8-1 : Duration of the stages of Re-engineering.Stage Description Duration (PW)- Background research into un-structured mesh CFD. 6- Project planning and learning to use tools. 3(1) Ensure data consistency and make data global. 3(2) Name and algorithm clarification. 2(3) Removal of code and simplification. 3(4) Ensure consistent use of control and replace logicals. 2(5) Translate from FORTRAN to C++. 2(6) File I/O modifications. 3(7) Implement data classes to replace arrays. 4(8) Create class member functions. 4It should be noted that stage 9 of the re-engineering is an on-going process and it is thereforeimpossible to detail the statistics associated with this stage of the development. Furtherinformation about run-time performance characteristics and an appraisal of the software reengineeringcan be found in the Appendices (See Appendix 11.2).3-68
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PhD Thesis by John Ewer.11 Appendic
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APPENDIX 1 : SMARTFIRE VERIFICATION
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ACKNOWLEDGEMENTSAPPENDIX 3 : Confer
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