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TrGeminus 1 Bo jog Loje..-t Contract No.EVE-16-292.9 <br /> 1414411 Technology Development] ME Projeallo. 160731 <br /> Contents <br /> 1 Introduction 4 <br /> 2 Computational Fluid Dynamics(CFD)-Based Modeling&Analysis Apoach .4...... <br /> 2.1 CFD Software,Discretization&Flow Physics Model............. ..................................5 <br /> 2.1.1 CFD Software 5 <br /> 2.2 Analysis Cases&Operational Scenarios <br /> 2.2.1 Model Validation-Case 1 Operating Scenarios......_.............. ...... ...................6 <br /> 2.2.2 Case 2& 3 Operating Scenarios................................................................................6 <br /> 2.3 Key Model Assumptions&Limitations 7 <br /> 2_31 Computational Geometry 7 <br /> 2.3.2 'Ventilation 10 <br /> 23.3 Volatiles Release Model 11 <br /> 2.4 Summary Of CFD Model Inputs 12 <br /> 2.4.1 45-03 Ventilation Upgrade 12 <br /> 2_4_2 Hangar Shell ...............................___................ ........... ........................12 <br /> 2.4.3 Aircraft 13 <br /> 2.4.4 Hangar Interior Configuration 14 <br /> 2.4.5 Paint Scenario&Configuration ...... ..................... 15 <br /> 2.5 Expected Impact of Modeling Assumptions On%LEL Predictions 19 <br /> 3 CFD-Based Analysis Validation(Case 1). 20 <br /> 3.1 CFD Model Validation Approach&Methodology 20 <br /> 3.1.1 Use Of CFD Models To Predict Environmental Air Flows In Paint Hangars 22 <br /> 3.2 Pre-Modification Airflow Pattern Predictions &%LEL Comparison 22 <br /> 3.2.1 45-03 Pre-Modification CFD Model Configuration 24 <br /> 3.2.2 Airflow Only(Case 1/Scenario 1)Results 24 <br /> 3.2.3 45-03 Air Velocity Measured Data Review 28 <br /> 3.2.4 Airflow Only CFDfMeasurements Comparison 30 <br /> 3.3 Pre-Modification%LEL Predictions&Comparison .35 <br /> 3.3.1 %LEL CFD Predictions 36 <br /> 3.3.2 LEL Measured Data.. _44 <br /> 3.3.3 %LEL Predictions vs Measurements 47 <br /> 3.4 Airflow and%LEL Model Validation Summary 50 <br /> 015') <br />