ESTS0650 PIPE-ESTSC.
PIPE-ESTSC, Friction Factor for 3-D Turbulent Flow in Rough Tubes
NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES
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| Program name | Package id | Status | Status date |
|---|---|---|---|
| PIPE-ESTSC | ESTS0650/01 | Arrived | 24-JAN-2002 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| ESTS0650/01 | IBM PC |
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3. DESCRIPTION OF PROGRAM OR FUNCTION
Three-dimensional roughened internally enhanced tubes have been shown to be one of the most energy efficient for turbulent, forced convection applications. However, there is only one prediction method presented in the open literature and that is restricted to three-dimensional sand-grain roughness. Other roughness types are being proposed: hemispherical sectors, truncated cones, and full and truncated pyramids. There are no validated heat-transfer and friction-factor prediction methods for these different roughness shapes that can be used in the transition and fully rough region. This program calculates the Nusselt number and friction factor values, for a broad range of three-dimensional roughness types such as hemispherical sectors, truncated cones, and full and truncated pyramids. Users of this program are heat-exchangers designers, enhanced tubing suppliers, and research organizations or academia who are developing or validating prediction methods.
Three-dimensional roughened internally enhanced tubes have been shown to be one of the most energy efficient for turbulent, forced convection applications. However, there is only one prediction method presented in the open literature and that is restricted to three-dimensional sand-grain roughness. Other roughness types are being proposed: hemispherical sectors, truncated cones, and full and truncated pyramids. There are no validated heat-transfer and friction-factor prediction methods for these different roughness shapes that can be used in the transition and fully rough region. This program calculates the Nusselt number and friction factor values, for a broad range of three-dimensional roughness types such as hemispherical sectors, truncated cones, and full and truncated pyramids. Users of this program are heat-exchangers designers, enhanced tubing suppliers, and research organizations or academia who are developing or validating prediction methods.
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4. METHOD OF SOLUTION
PIPE obtains solutions of a modified form of the momentum and energy equations using an implicit finite difference method. These modified forms on the momentum and energy equations contain contributions from the roughness elements and also from the unaltered portion of the pipe.
PIPE obtains solutions of a modified form of the momentum and energy equations using an implicit finite difference method. These modified forms on the momentum and energy equations contain contributions from the roughness elements and also from the unaltered portion of the pipe.
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7. UNUSUAL FEATURES OF THE PROGRAM
Throughout the code, attempts were made to use variable names that were close facsimiles of the symbols in the mathematical development in the text. $DECLARE and $STRICT commands of Microsoft FORTRAN were used that force the compiler to obey strict FORTRAN 77 standards for easing portability. The input is interactive and output is self-explanatory.
Throughout the code, attempts were made to use variable names that were close facsimiles of the symbols in the mathematical development in the text. $DECLARE and $STRICT commands of Microsoft FORTRAN were used that force the compiler to obey strict FORTRAN 77 standards for easing portability. The input is interactive and output is self-explanatory.
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ESTS0650/01, included references:
- R.P. Taylor and B.K. Hodge:Validated Heat-Transfer and Pressure-Drop Prediction Methods
Based on the Discrete Element Method: Phase I, Three-Dimensional
Roughness
ANL-ESD-TM-31 (February 1992)
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ESTS0650/01
source program mag tapePIPE.FOR Source code SRCTPload module mag tapePIPE.EXE Executable file LODTP
test-case data mag tapeFLOW.DAT Input file DATTP
report ANL/ESD/TM-31 (February 1992) REPPT
Keywords: heat transfer, tubes, turbulent flow.