An in-depth investigation of an innovative internally channeled tube (ICT) heat exchanger design / von M. Sc. Abbas Jarullah Sangoor Al-Lami ; Referent: Prof. Dr.-Ing. habil. Eugeny Kenig, Korreferent: Prof. Dr.-Ing. habil. Andrea Luke. Paderborn, 2025
Inhalt
- Contents
- List of Figures
- List of Tables
- Nomenclature
- 1 Introduction
- 2 Literature review
- 3 Theoretical background and CFD modeling
- 3.1 Governing equations of fluid flow
- 3.1.1 Mass conservation equation
- 3.1.2 Momentum conservation equation
- 3.1.3 Energy conservation equation
- 3.2 Conjugate heat transfer
- 3.3 Turbulence modeling
- 3.3.1 Reynolds-Averaged Navier-Stokes equations (RANS)
- 3.3.2 Realizable 𝑘−𝜖 model
- 3.3.3 Near-wall treatment
- 3.4 Computational fluid dynamics (CFD)
- 3.5 Conclusions
- 4 The geometry of ICT heat exchangers
- 5 Fluid dynamics and heat transfer in ICTs
- 5.1 Numerical study
- 5.1.1 Computational domain
- 5.1.2 Boundary conditions
- 5.1.3 Grid generation
- 5.1.4 Process parameters definitions
- 5.2 Experimental Study
- 5.2.1 Manufacturing and assembly of ICT1
- 5.2.2 Experimental set-up
- 5.2.3 Uncertainty analysis
- 5.2.4 Maldistribution in the channels of the ICT
- 5.3 Results and discussion
- 5.3.1 Grid independence study
- 5.3.2 Evaluation of the domain-splitting approach in CFD simulations
- 5.3.3 Boundary layer distribution
- 5.3.4 Evaluation of the maldistribution
- 5.3.5 Flow type characterization in the ICT1 ducts
- 5.3.6 Validation of CFD model
- 5.4 Conclusions
- 6 Evaluation of thermal-hydraulic performance of ICTs
- 7 Design methods for ICTs
- 7.1 Design equations for friction factor
- 7.2 Design equations for Nusselt number
- 7.3 Evaluation of the ICT2 CFD model using ICT1 correlations
- 7.4 Conclusions
- 8 Conclusions
- References
- Appendix