Class information for:
Level 1: SONIC NOZZLE//CRITICAL NOZZLE//CRITICAL FLOW VENTURI NOZZLE

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
27697 223 16.1 31%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
18 4 THERMODYNAMICS//ENERGY & FUELS//ENGINEERING, CHEMICAL 531182
68 3       ENGINEERING, AEROSPACE//AIAA JOURNAL//MECHANICS 84081
2823 2             FLOW MEASUREMENT AND INSTRUMENTATION//THERMAL FLOW SENSOR//VORTEX FLOWMETER 3016
27697 1                   SONIC NOZZLE//CRITICAL NOZZLE//CRITICAL FLOW VENTURI NOZZLE 223

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 SONIC NOZZLE authKW 1648855 8% 71% 17
2 CRITICAL NOZZLE authKW 1380709 5% 92% 11
3 CRITICAL FLOW VENTURI NOZZLE authKW 489033 2% 71% 5
4 CRITICAL PRESSURE RATIO authKW 489033 2% 71% 5
5 DISCHARGE COEFFICIENT authKW 458166 14% 10% 32
6 CRITICAL VENTURI NOZZLE authKW 410790 1% 100% 3
7 GAS FLOW DILUTOR authKW 410790 1% 100% 3
8 SMALL SONIC NOZZLE authKW 410790 1% 100% 3
9 FLOW MEASUREMENT AND INSTRUMENTATION journal 383111 26% 5% 58
10 FLUID FLOW GRP address 311199 2% 45% 5

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Instruments & Instrumentation 5685 50% 0% 111
2 Engineering, Mechanical 3494 40% 0% 90
3 Engineering, Aerospace 260 5% 0% 12
4 Engineering, General 224 8% 0% 18
5 Engineering, Petroleum 101 2% 0% 5
6 Thermodynamics 94 6% 0% 13
7 Energy & Fuels 76 7% 0% 15
8 Physics, Applied 67 14% 0% 31
9 Chemistry, Analytical 46 8% 0% 17
10 Mechanics 22 4% 0% 10

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 FLUID FLOW GRP 311199 2% 45% 5
2 FLUID MEASUREMENT SECT 273860 1% 100% 2
3 GAS FLOW STAND SECT 273860 1% 100% 2
4 GAS METROL 273860 1% 100% 2
5 AUSTRALIAN IRRIGAT HYDRAUL TECHNOL 182572 1% 67% 2
6 FLOW 168524 2% 31% 4
7 2 80 1 136930 0% 100% 1
8 ALLIANT TECHSYST 136930 0% 100% 1
9 CALIBRAT S 136930 0% 100% 1
10 CENT COMPANIA LOGIST HIDROCARBUROS 136930 0% 100% 1

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 FLOW MEASUREMENT AND INSTRUMENTATION 383111 26% 5% 58
2 MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA 38097 4% 3% 9
3 GAS ENGINEERING & MANAGEMENT 9127 0% 7% 1
4 METROLOGIA 3998 4% 0% 9
5 PIPELINE & GAS JOURNAL 3258 0% 2% 1
6 ACCREDITATION AND QUALITY ASSURANCE 2673 2% 0% 5
7 INTERNATIONAL JOURNAL OF TURBO & JET-ENGINES 2293 1% 1% 3
8 JOURNAL OF THE AIR POLLUTION CONTROL ASSOCIATION 1722 1% 0% 3
9 STUDIES IN INFORMATICS AND CONTROL 1468 1% 1% 2
10 JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY 1279 1% 0% 3

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 SONIC NOZZLE 1648855 8% 71% 17 Search SONIC+NOZZLE Search SONIC+NOZZLE
2 CRITICAL NOZZLE 1380709 5% 92% 11 Search CRITICAL+NOZZLE Search CRITICAL+NOZZLE
3 CRITICAL FLOW VENTURI NOZZLE 489033 2% 71% 5 Search CRITICAL+FLOW+VENTURI+NOZZLE Search CRITICAL+FLOW+VENTURI+NOZZLE
4 CRITICAL PRESSURE RATIO 489033 2% 71% 5 Search CRITICAL+PRESSURE+RATIO Search CRITICAL+PRESSURE+RATIO
5 DISCHARGE COEFFICIENT 458166 14% 10% 32 Search DISCHARGE+COEFFICIENT Search DISCHARGE+COEFFICIENT
6 CRITICAL VENTURI NOZZLE 410790 1% 100% 3 Search CRITICAL+VENTURI+NOZZLE Search CRITICAL+VENTURI+NOZZLE
7 GAS FLOW DILUTOR 410790 1% 100% 3 Search GAS+FLOW+DILUTOR Search GAS+FLOW+DILUTOR
8 SMALL SONIC NOZZLE 410790 1% 100% 3 Search SMALL+SONIC+NOZZLE Search SMALL+SONIC+NOZZLE
9 BELL PROVER 273860 1% 100% 2 Search BELL+PROVER Search BELL+PROVER
10 CRITICAL FLOW FACTOR 273860 1% 100% 2 Search CRITICAL+FLOW+FACTOR Search CRITICAL+FLOW+FACTOR

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 BOBOVNIK, G , KUTIN, J , BAJSIC, I , (2016) UNCERTAINTY ANALYSIS OF GAS FLOW MEASUREMENTS USING CLEARANCE-SEALED PISTON PROVERS IN THE RANGE FROM 0.0012 G MIN(-1) TO 60 G MIN(-1).METROLOGIA. VOL. 53. ISSUE 4. P. 1061 -1068 10 83% 0
2 HU, CC , LIN, WT , SU, CM , (2011) FLOW CHARACTERISTICS OF PYRAMIDAL SHAPED SMALL SONIC NOZZLES.FLOW MEASUREMENT AND INSTRUMENTATION. VOL. 22. ISSUE 1. P. 64 -70 9 100% 5
3 DING, HB , WANG, C , WANG, G , (2016) APPROXIMATE SOLUTION FOR DISCHARGE COEFFICIENT OF THE SONIC NOZZLE WITH SURFACE ROUGHNESS.FLOW MEASUREMENT AND INSTRUMENTATION. VOL. 52. ISSUE . P. 227 -232 9 82% 0
4 KUTIN, J , BOBOVNIK, G , BAJSIC, I , (2015) HEAT EXCHANGE EFFECTS ON THE PERFORMANCE OF A CLEARANCE-SEALED PISTON PROVER FOR GAS FLOW MEASUREMENTS.METROLOGIA. VOL. 52. ISSUE 6. P. 857 -863 9 75% 0
5 DING, HB , WANG, C , ZHAO, YK , (2014) INFLUENCE OF DIVERGENT SECTION ON FLOW FIELDS AND DISCHARGE COEFFICIENT OF ISO 9300 TOROIDAL-THROAT SONIC NOZZLE.FLOW MEASUREMENT AND INSTRUMENTATION. VOL. 40. ISSUE . P. 19 -27 9 69% 1
6 XU, ZP , DAI, JY , CHEN, HY , XIE, DL , (2014) DEVELOPMENT OF A RECIPROCATING DOUBLE-PISTONS GAS PROVER.FLOW MEASUREMENT AND INSTRUMENTATION. VOL. 38. ISSUE . P. 116 -120 6 100% 2
7 NAGAO, J , MATSUO, S , SETOGUCHI, T , KIM, HD , (2010) EFFECTS OF UNSTEADY DOWNSTREAM CONDITIONS ON THE GAS FLOW THROUGH A SONIC NOZZLE.INTERNATIONAL JOURNAL OF TURBO & JET-ENGINES. VOL. 27. ISSUE 2. P. 95-108 6 100% 0
8 DING, HB , WANG, C , ZHAO, YK , (2015) SURFACE ROUGHNESS EFFECT ON FLOW MEASUREMENT OF REAL GAS IN A CRITICAL NOZZLE.MEASUREMENT. VOL. 68. ISSUE . P. 82 -91 8 62% 0
9 HU, CC , LIN, WT , SU, CM , LIU, WJ , (2012) DISCHARGE CHARACTERISTICS OF SMALL SONIC NOZZLES IN THE SHAPE OF PYRAMIDAL CONVERGENT AND CONICAL DIVERGENT.FLOW MEASUREMENT AND INSTRUMENTATION. VOL. 25. ISSUE . P. 26-31 5 100% 2
10 HU, CC , LIN, WT , (2009) PERFORMANCE TEST OF KOH-ETCHED SILICON SONIC NOZZLES.FLOW MEASUREMENT AND INSTRUMENTATION. VOL. 20. ISSUE 3. P. 122-126 6 86% 6

Classes with closest relation at Level 1


Rank Class id link
1 21634 GASEOUS STANDARD MIXTURES//STANDARD GAS MIXTURES//IMMOBILIZED COMPOUNDS
2 24851 CORIOLIS MASS FLOWMETER//CORIOLIS FLOWMETER//MEASUREMENTS PROC ENGN
3 28161 PRESSURE SQUARE WAVE GENERATOR//VICALLOY WIRE//RESISTANCE TEMPERATURE SENSOR
4 17185 VORTEX FLOWMETER//FLOW MEASUREMENT AND INSTRUMENTATION//WET GAS METERING
5 22179 MICROTHRUSTER//MICRONOZZLE//MONOPROPELLANT
6 12409 THERMAL FLOW SENSOR//FLOW SENSOR//ANEMOMETER
7 34253 MEASUREMENT INTEGRATED SIMULATION//ISOTHERMAL CHAMBER//FLOW RATE CHARACTERISTICS
8 18106 WET STEAM//NON EQUILIBRIUM CONDENSATION//SUPERSONIC SEPARATOR
9 31313 ABSORBING AND SCATTERING PARTICLES//AXI SYMMETRIC JET//CASTING ROLLING
10 35223 ADEQUACY OF THE MODEL//BURNING RATE TEMPERATURE COEFFICIENT//CAUCHY FUNDAMENTAL SOLUTION

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