New ways of Modelling with Phoenics
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1 New ways of Modelling with Phoenics Dr. Eckehard Fiedler, IAC, Bergisch-Gladbach, Germany Seite 1
2 Contents general overview our projects our workflow some new tools Seite 2
3 That s me Dr. Eckehard Fiedler company MW-Zander Facility engineering R&D-department CFD Thermal building simulation general calculations working with phoenics ~ 5 years more than 10 years experimental work with industrial fluid technology, heat transfers, windtunnel tests etc.. Seite 3
4 PROJECT EXAMPLES Seite 4
5 exhaust dispersion studies Seite 5
6 Stack layout Seite 6
7 visualization Seite 7
8 visualization Seite 8
9 Quantitative analysis Seite 9
10 Recirculaion detail Seite 10
11 EXHIBITION HALL Seite 11
12 exhibition hall Seite 12
13 exhibition hall swirl outlets Seite 13
14 exhibition hall temperature field Seite 14
15 exhibition hall system comparison Seite 15
16 exhibition hall flow visualization Seite 16
17 VENTILATION STUDIES Seite 17
18 ventilation study for historical building Seite 18
19 model visualization Seite 19
20 model explanation Seite 20
21 model explanation Seite 21
22 Horzontal temperature profile Seite 22
23 Horzontal temperature profile Seite 23
24 Iso-surface 20.1 C Seite 24
25 Iso-surface 20.5 C Seite 25
26 Iso-surface 21.0 C Seite 26
27 Iso-surface 20.2 C Seite 27
28 Iso-surface 23.0 C Seite 28
29 Iso-surface 24.0 C Seite 29
30 Iso-surface 25.0 C Seite 30
31 Iso-surface 26.0 C Seite 31
32 making our customers understand what happens Seite 32
33 BUILDING ANALYSIS Seite 33
34 building analysis Seite 34
35 do you understand this? Galerie Büro_offen Pausenraum Büro Büro Pausenraum Büro Luftraum Galerie Luftraum Flur Galerie Flur Flur Pausenraum Büro Büro Pausenraum Büro_offen Büro Galerie Werkschau Seite 35
36 or this? Lufttemperatur t in C 40 C 35 C 30 C Mollier h,x-diagramm für den Druck 1000 hpa % 1 25 C 30% 40% Behaglichkeitsbereich nach DIN1946 Teil 2 50% 20 C 60% 70% 15 C 2 80% 90% C C 0 C spezifische Enthalpie h in kj/kg Trockenluft Nr T [ C] P [kw] Benennung Außenluft Zentralanlage Kühler WRG Kühler Wassergehalt x in g/kg Trockenluft Seite 36
37 but that... Seite 37
38 ...is clear... Seite 38
39 ...for everyone! Seite 39
40 We bring the geometry to phoenics directly! Seite 40
41 We bring the geometry to phoenics directly! Seite 41
42 and we move everything to fieldview! Seite 42
43 Seite 43
44 Seite 44
45 Seite 45
46 Seite 46
47 Seite 47
48 Seite 48
49 SYSTEM DESIGN Seite 49
50 Sportpalace Seite 50
51 Model overview Seite 51
52 Model explanation Seite 52
53 Model explanation Seite 53
54 Model explanation Seite 54
55 Mesh visualization Seite 55
56 Flowfield Seite 56
57 Flowfield Seite 57
58 Flowfield Seite 58
59 Variant setup Seite 59
60 ALL CASES WHERE SIMULATED WITH PHOENICS! Seite 60
61 But phoenics needs some help! Seite 61
62 Our Workflow FVUNS STL DAT Q1 Konverter STL PHI Phoenics Fieldview MS-Excel Seite 62
63 Why do we need a solid modeller? drawing assembly 3D-view extrusion Simple shadow calculation Seite 63
64 Advanced rendering Seite 64
65 Drawings Seite 65
66 Solid modelling Using a modern 3D-CAD program has multiple benefits for our work: Used for geometry creation (-> STL) Speeds up model setup dramatically Handle complex geometry easily Convert a multitude of 3D formats Build geometry based on 2D drawings Change geometry through parametric design High quality output is important for most customers Has a lot of spin off for your work Seite 66
67 Our tools Seite 67
68 Geometry-Cross-Converter STL_FVUNS.EXE Reading STL DAT Writing STL DAT Multi-Dat +Q1 FVUNS We can convert a complete Assembly from Solidworks (via STL) to Phoenics and fieldview Seite 68
69 STL_FVUNS.EXE propeties Geometry Conversion brings all the power of a Solid Modeller to Phoenics! solidworks And we can solve some problems with the STL-files... phoenics STL- File DAT- File fieldview Seite 69
70 And our little star: Q1-Excel Q1-Excel is a conversion tool, that converts the complete VR-geometry into an excel-file and vice versa header VR Seite 70
71 Example B2 B1 B3 One VR-object gives one line in Excel. And the clou is: We got a two way conversion Q1 -> Excel Excel -> Q1 So you can modify, copy, change, calculate anything you want Seite 71
72 Beispiele IN1 IN6 B1 B3 Q1-Excel is simple, but very powerful: direct Excel access self learning new properties does some model checks (input balance) can read and format result files -> Excel can export FVUNS and STL-files from Q1-definition Seite 72
73 Q1-Excel: some check features Example for a result readout NAME OBJ R1 TEM1 OUT1 OB C DECKE OB DECKE1 OB DECKE2 OB INLET1 OB C INLET2 OB C Result R1 TEM1 pos. sum neg. sum Nett sum Final TimeStep 1 Final Sweep 223 And, what s the big button for? imagine, how fast it is... Example for a balance check Domain Size m² 19.4 m/s Typ Name A u V IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s IN IA m² 5.0 m/s 0.8 m³/s IN IB m² 5.0 m/s 0.8 m³/s Inlets: 85 Outlets : 43.0 m² 1.5 m/s 64.0 m³/s Seite 73
74 Q1-Excel: repeat command Seite 74
75 Conclusion Phoenics VR is the fastest and best tool on the market to calculate the flow through complex geometry: Fast semi-automated meshgeneration Parcel solid treatement There are some significant improvements, if we combine PHOENICS with a powerful 3D CAD package and a more advanced postprocessor. Some of the features could be included into phoenics easily: Direct Data Exchange with Excel via OLE2 Some improvements on the VR-viewer (fieldview gives a good guideline!)! The annual costs for our Tools where less than one Fluentlicense for the first year, and less than a half Fluent license for the next years! Seite 75
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