NASA/Lewis Research Center, 21000 Brookpark Road, Cleveland, OH 44135

A -- JET PLUME FLOW SOLUTION SOL 3-102158 DUE 092198 POC Heidi D. Shaw, Contract Specialist, Phone (216) 433-5346, Fax (216) 433-2480, Email Heidi.D.Shaw@lerc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/LeRC/date.html#3-102158. E-MAIL: Heidi D. Shaw, Heidi.D.Shaw@lerc.nasa.gov. This is an amendment to Request for Quotation 3-102158 issued on August 6, 1998. The purpose of this amendment is to respond to questions that have been received. Please note: the closing date for the request for quotation has NOT been extended, and remains at close of business SEPTEMBER 21, 1998. Please note, the numbering of questions is continued from amendments 1-4: Question 6: "The Statement of Work in the RFQ says "the goal of this procurement is to produce a 3-dimensional solution that:(1) can be obtained in 1 day from a given geometry and nozzle exit conditions". (1) Does this mean that, in addition to computing the CFD solution, the grid must be generated from the IGES files supplied by NASA within the one day time limit noted in the SOW?" Answer 6: Yes Question 7: (2)"Or can the grid be generated offline and then the 1-day time limit clock starts running once the CFD solution is submitted?" Answer 7: NASA will supply the IGES file within 1-month of contract initiation. 1-day clock starts whenIGES file is submitted to the grid-generation program. Question 8: (3) If the answer to question (1) is yes, does the grid generation procedure have to be automated (i.e. performed wholly by the computer with only minimal inputs)? Or can it involve interaction with the user (for example using a grid generation package like GRIDGEN)?" Answer 8: Automation is not required. You can use whatever method you want to create grids. 1-day clock starts when IGES file is FIRST submitted to the grid program and stops when CFD solution is obtained. Question 9: (4) Are there any other grid generation limitations/requirements (other than being sufficiently resolved to capture the flowfield accurately)?" Answer 9: No. General comment: the idea is to have a technique that can quickly provide CFD solutions of various nozzle geometries. 1-day limit is imposed so several geometries can be tried quickly without accumulating significant computer and engineer time. Posted 09/14/98 (D-SN249192). (0257)

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