ASME PTC 19.23 1980 R1985

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ASME PTC-19.23 Guidance Manual for Model Testing – Reaffirmed 1985

Published By	Publication Date	Number of Pages
ASME	1980	86

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Category: ASME

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Description

This Standard provides guidance for the design and application of models by those concerned with the extension or supplementation of prototype tests of equipment using ASME Performance Test Codes. Where there are test codes in existence covering specific equipment, the guiding principles, instruments and methods of measurement from such codes shall be used with only such modifications as become necessary by virtue of the fact that a model is being tested instead of a prototype. A model is a device, machine, structure or system which can be used to predict the behavior of an actual and similar device, machine, structure or system which is called the prototype. A physical model may be smaller than, the same size as, or larger than the prototype. PTC 19.23 consists of (a) General discussion of model testing; (b) Example problems; and (c) Theoretical background.

PDF Catalog

PDF Pages	PDF Title
4	FOREWORD
6	PERSONNEL OF PERFORMANCE TEST CODE COMMITTEE NO. 19.23 ON MODEL TESTING
7	Personnel of Performance Test Codes Supervisory Committee
8	CONTENTS
10	SECTION 1 0 GENERAL 0.1 Objective 0.2 Intended Use of This Document 0.3 Definition of a Model 0.4 General Philosophy
11	1 DIMENSIONS TABLES TABLE 1
12	2 UNITS 3 DIMENSIONLESS GROUPS 4 SIMILITUDE (SIMILARITY) TABLE 2
13	4.1 4.2 5 SOME MODELING EXAMPLES USING DIMENSIONLESSNUMBERS 5.1 The Pendulum
14	5.2 A Vibration Dynamic Damper 5.3 Incompressible Flow Turbine Blade Cascade Study 5.4 Compressible Flow Turbine Study FIGURES FIG. 1 (a) FIG. 1 (b)
15	FIG . 2 FIG. 3
16	5.5 Flow Induced Turbulence FIG. 4 FIG. 5
17	FIG.6
18	5.6 Characteristic Length FIG. 7 FIG. 8
19	6 REFERRED QUANTITIES FIG. 9
20	FIG. 10 CLASSIFICATION OF TURBULENT FLOW
22	SECTION 2 INDEX OF EXAMPLE PROBLEMS EXAMPLE 1- OVERSIZED TURBINE STAGE FLOW MODEL
23	TABLE 1-1
24	EX. 1-1 MOVING BUCKETS AND OBSERVER ON GENERAL ELECTRIC 25/1 SCALE TURBINE STAGE EX. 1-2 COMPARISON OF THEORETICAL AND MEASURED PRESSURE DISTRIBUTIONS ON ROTATING BUCKET
25	EXAMPLE 2- PUMP INTAKE VORTEX STUDIES
26	EX. 2-1 TYPICAL PUMP INSTALLATION AND INTAKE DESIGN EX. 2-2
28	EX. 2-3 MODEL SUCTION TUNNEL
29	TABLE 2-1 PROTOTYPE AND MODEL DATA
30	EX. 2-4 SIPHON LOSS WITH BELL SUCTION EX.2-5 SIPHON LOSS WITH SCOOP SUCTION
31	EX . 2-6 COMPARISON OF LOSSES WITH SCOOP SUCTION AND BELL SUCTION
32	EXAMPLE 3 – HYDRAULIC TURBINE TESTS EX. 2-7 DRAWDOWN AND HEAD-LOSS CURVES
33	EX. 3-1 EX.3-2
34	EXAMPLE 4- BUTTERFLY VALVE TESTS
35	EX. 4-1
36	EX. 4-2 LOSS COEFFICIENTS OF BUTTERFLY VALVE FOR VARIOUS CLOSING ANGLES() ANO NOZZLE THRUSTS
37	EX. 4-3 TORQUE OF BUTTERFLY VAlVE FOR VARIOUS ANGLES AND PRESSURE DROPS
38	EX . 4-4 DISCHARGE COEFFICIENT FOR VARIOUS ANGLES AND PRESSURE DROPS
39	EXAMPLE 5- ELECTROSTATIC PRECIPITATOR, GAS FLOW DISTRIBUTION
40	EX. 5-1 SIDE ELEVATION OF ELECTROSTATIC PRECIPITATOR
41	EX. 5-2 GAS FLOW IMBALANCE – OUTLET FLUES AND I.D. FANS
42	EX. 5-3 SIDE ELEVATION OF I.D. FANS
43	EX. 5-4 TYPICAL MEASURED VELOCITY PROFILE, AS INSTALLED LOWER PRECIPITATOR INLET
44	EX. S-5 AVERAGE INLET VELOCITY SIDE ELEVATION PROFILES, AS INSTALLED
45	EX. 5-6 AVERAGE OUTLET VELOCITY SIDE ELEVATION PROFILES, AS INSTALLED
46	EX. 5-7 HISTOGRAM ANALYSIS OF UPPER PRECIPITATOR INLET VELOCITY MEASUREMENTS
47	EX. 5-8 HISTOGRAM ANALYSIS OF LOWER PRECIPITATOR INLET VELOCITY MEASUREMENTS
48	EX. 5-9 MODEL STUDY OF THE PRECIPITATOR INSTALLATION
49	EX. 5-10 VERTICAL GAS FLOW DISTRIBUTION LOWER PRECIPITATOR INLET EX. 5-11 VERTICAL GAS FLOW DISTRIBUTION LOWER PRECIPITATOR OUTLET
51	EXAMPLE 6- FLOW IN FURNACES AND DUCTS, SMOKE AND WATER TABLE TESTS EX. 6-1 SMOKE TABLE-ECONOMIZER TO AIR HEATER- AS DESIGNED
52	EX. 6-2 SMOKE TABLE-ECONOMIZER TO AIR HEATER – AS MODIFIED IN MODEL
53	EX. 6-3 WATER TABLE- TWO-DIMENSIONAL MODEL EX.6-4 WATER TABLE- REPEAT OF EX. 6-1
54	EXAMPLE 7- COOLING TOWER, FLOW RECIRCULATION
56	EXAMPLE 8- LARGE COMPRESSOR FOR THE TULLAHOMA WINDTUNNEL EX. 8-1 ONE OF FOUR SECTIONS OF THE 400,000 HP TULLAHOMA WINDTUNNEL COMPRESSOR. THIS COMPRESSOR WAS DEVELOPED USING 1/8 AND 1/16 SCALED MODELS.
57	EX. 8-2 1/18 SIZE LOW SPEED MODEL (100 HP) (74.6 kW) EX. 8-3
58	EX. 8-4 1/16 SIZE MODEL OF ONE SECTION OF THE TULLAHOMA COMPRESSOR (216,000 HP) (161 ,194 kW)
59	EX. 8-5 COMPARISON OF THE PREDICTED AND MEASURED PERFORMANCE CHARACTERISTICS OF THE COMPRESSOR
60	EXAMPLE 9- RIVER MODEL HEATING STUDIES
61	EX. 9-1 GENERAL ARRANGEMENT OF YORKTOWN ESTUARY MODEL
62	EX. 9-2 TEMPERATURE RISE ABOVE RIVER AMBIENT SURFACES/PROFILES
63	EXAMPLE 10- MODEL TESTING OF LARGE FANS
64	SECTION 3 THEORETICAL BACKGROUND 1 DIMENSIONS
65	2 DIMENSIONAL ANALYSIS
66	3 REFERRED QUANTITIES AND SPECIFIC SPEED TABLE 3 REFERRED QUANTITIES
67	4 SIMILARITY AND MODEL LAWS TABLE 4 TURBOMACHINERY DIMENSIONLESS* VARIABLES
68	FIG. 11 CENTRIFUGAL AND AXIAL FLOW PUMPS FIG. 12 PUMP EFFICIENCY VERSUS SPECIFIC SPEED AND PUMP SIZE
69	5 EXAMPLES 5.1 Efficiency of a Centrifugal Pump 5.2 Film-Type Condensation in_a Vertical Pipe
70	5.3 Dimensional Analysis of a Time Dependent Radiative Model FIG. 13
71	6 THE SIMILARITY LAWS OF REYNOLDS AND FROUDE
72	7 DERIVATION OF MODEL LAWS FROM BASIC PHYSICAL LAWS
74	APPENDIX