1 / 23

RTD software for identification of spatially localised models and data standardisation

RTD software for identification of spatially localised models and data standardisation. R.Žitný, J.Thýn Czech Technical University in Prague. . History of RTD software development at CTU. Radiotracers group UVVVR since 1965. First generation of RTD (mainframe), 1973-1980

avidan
Download Presentation

RTD software for identification of spatially localised models and data standardisation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. RTD software for identification of spatially localised models and data standardisation R.Žitný, J.Thýn Czech Technical University in Prague

  2. .History of RTD software development at CTU • Radiotracers group UVVVR since 1965. • First generation of RTD (mainframe), 1973-1980 • Second generation (HP Basic), 1978-1989 • Third generation (IBM PC), 1989-1999 • Fourth generation ?

  3. First generation of RTD • Portability (Fortran 4, file oriented I/O) • Transparency (easy modifications) • Simple (user friendly) definition of batch

  4. Example of batch(identification) • INPUT(1) • INPUT(2) • NORM2(1,2) • ECOEF2(1,2,3) • TPOINT(3) • STOP • data (ti,ci) for time curve 1 – inlet stream • data (ti,ci) for time curve 2 – outlet stream.

  5. Third generation of RTD • Interactive Fortran77, (Matrix Editor, PF) • Regularisation in time, Fouriere, Laguerre domain • Identification of mixed type parameters (integer/real) • Definition of models using MDF

  6. Black - Gray box analysis

  7. Model definition file (MDF) C______1 series & backmixing [P1] Backmixing ratio f=@1F8.2 [P2] Mean residence time Te=@2F8.2 [P3] Number of units @3F6.0 \\INIT real tm,f,aux integer i f=p(1) neq=p(3) tm=p(2)/neq c(1)=1/tm \\MODEL dc(1)=(x+f*c(2)-(1+f)*c(1))/tm i=1 while i<neq-1 do begin i=i+1 aux=(1+f)*c(i-1)+f*c(i+1)-(1+2*f)*c(i) dc(i)=aux/tm end dc(neq)=((1+f)*(c(neq-1)-c(neq)))/tm y=c(neq) \\PARAM

  8. Models defined by users • variable flow/volume, • axial dispersion • collimation characteristics, • heat transfer • multiple inlets/outlets, • heterogeneous system • batch systems

  9. RTD0 application • Steam velocity. Venturimeter calibration;(NZ) • Effective volume, holdup. Waste stabilization pond (Ph; Ml), Holding tanks (Alumina industry) (Au), Rotary kiln (Cz) • Parallel flows, bypass,channeling. Tank with settler - pilot plant (K), Ethylalcohol reactor (Cz), Precipitation tanks (Au), Holding tanks (Au) • Mixing characteristic, axial dispersion • Recirculation flowrate ratio • Separation effect,tracer balance. Cement industry -Cyclone (K)

  10. RTD1 application • Flow rate measurement. Steam velocity measur.(NZ), flowrate measurement (K), incinerator (NZ), temperature disturbances (extremely slow flowrate) (Cz) • RTD functions: E(t), F(t), 8(t). Fluidized catalytic cracking (Au, Fi), Settling tank; waste water treatment (Cz), Heat exchanger (In,K), Evaporator (In), Aniline reactor (In), Indirect rotary dryer (In), Mercury removal unit (Th), Electron beam gas chamber (K), Direct ohmic heating (Cz) • Smoothing, disturbance attenuation. Waste water treatment (Cz) • Transfer functions, Frequency characteristics, Waste water treatment (Cz), furnace for glass (Cz)

  11. RTD2 application • Pilot plants. Mixed Tank (K); Extractor (Tl), Hygienization irradiator for waste water (batch system) • Waste water treatment. Tank of activated sludge (TAS), air tubes (Ge), aeration turbines (Cz) Gold system of activation (Cz), Sedimentation tanks (Cz), Equalization unit (Cz) Facultative oxidation Pond (Ph,Ml) • Heat exchangers. Tubular heat exchanger (In),(K) • Evaporation, dehydratation. Semi-Kestner (sugar industry) (In), Rotary dryer (In), Dehydratation rotational furnace (pigment production) (Cz) • Reactors. Production of aldehydes (Cz), Production of aniline (In), FCC crackinkg (1)Au, (2) Fi), • Alumina production (Au). Precipitators; digestors; agglomeration, holding tanks • Electron beams gas chamber (K). Chamber with baffles, chamber without baffles • Disintegration effect Hammer mill (Cz), drum furnace (Cz)

  12. Process modelling, LPM and CFD ?tracer EXPeriments • Lumped Parameter (LPM) • Computer fluid dynamics (CFD) • Combined Models (CM)

  13. Why spatially localised models? • Improved description and design of processes • Improved diagnostics • Residence time and temperature time T(t) • Thermal or irradiation treatment

  14. Distance=? Constant concentration in the view field Distance=? Non-uniform concentration in the view field Spatially localised LPM • Series • Parallel

  15. LPM & collimation algorithm FCC -Fluidised Cracking Core - Anulus model (ccore, cwall =?)

  16. EXP & collimation algorithm Direct Ohmic Heating Collimated Detector

  17. CFD & collimation algorithm Direct Ohmic Heating FEM-COSMOS/M Collimated Detector CV-FLUENT (600000 nodes, 600 MB results)

  18. CFD/EXP collimation algorithm

  19. Focused collimation algorithm

  20. 4th generation RTD software • Project file • Script • Programs

  21. ConceptualschemeCORE • Project file • Script • Programs

  22. FRONTEND GTK libraryfor Windows and Unix • Windows • Visual studio? • Linux

  23. UNIX orWindows ? B.G.makes stars from secretaries and idiots from experts

More Related