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# Case Studies and Workbooks

From time to time, NAFEMS publishes reports giving detailed information about finite element analyses in the form of Case Studies and Workbooks. Those published so far are detailed below.

R0019 , **Pickering** **, A N, and Ricketts, D C,** NAFEMS Workbook of Examples, circa 1990.

This gives 10 worked examples, to enable a newcomer to finite element analysis to follow. The geometries are kept simple to minimise data generation effort. Explicit input details are given, and various resulting aspects are highlighted and discussed. The workbook is aimed to complement those who have recently completed the NAFEMS recommended 30 hour training course.

R0078 , **NAFEMS,** Advanced Workbook of Examples (Volume 1), 2001.

This contains 5 articles, each describing finite element applications with educational value, as follows:

- Modelling adhesively bonded joints, by T Dickerson,
- Adequate mesh refinement for accurate stresses, by K A Honkala,
- The importance of mesh density in the limit load analysis of elastoplastic frames, by V Souza Jr and G J Creus,
- The elastic analysis of a pipe bend, by T K Hellen,
- Influence of boundary conditions on the lateral buckling load of thin beams, by B F Oliviera and G J Creus.

R0086 , **NAFEMS,** Advanced Workbook of Examples and Case Studies (Volume 2), 2003.

This contains 6 articles, each by different authors describing finite element applications with educational value, as follows:

- Confessions of an RA, by A N Other,
- The pitfalls of plate bending, by J Reijmers,
- Components are three-dimensional but…, by T Dickerson,
- Case study: failure investigation of coiled tubing frame, by N K Prinja,
- The validation of boundary conditions for finite element analyses, by S Feih and H R Shercliff,
- Investigation of screw thread pre-loads using three dimensional finite element analysis, by R Johnson.

R0008 , **White, P S, and Lowe, M J S,** Case Studies in Non-Linear Analysis, 1990.

Two very detailed descriptions of case studies in non-linear analysis are given. The first involves a geometrically complex component that is subjected to a repeated cycle of mechanical and thermal loading. Several analyses of varying complexity were involved, some including plasticity and creep. The second case is a benchmark exercise involving the calculation of thermal, elastic and creep response of rock salt. Again, complex non-linear behaviour was followed using thermal transient analysis and creep. Both studies are very specialised, but are still relevant as rather complicated benchmarks with a strong educational element.

R0069 , **NAFEMS,** Workbook of CFD Examples, 2000.

This contains 5 articles by various authors, describing CFD applications of good educational value as follows:

- Laminar, constant-temperature, plane-channel flow, by A Mosquera, M Butler and G Smith,
- Turbulent, constant-temperature, plane-channel flow, by P Tucker,
- Laminar, non-isothermal, plane-channel flow, by A Mosquera, M Butler and G Smith,
- Laminar, constant-temperature flow over a backward facing step, by A Rose and B Simpson,
- Turbulent, constant-temperature flow over a backward facing step, by A Rose and B Simpson.

CFDJ1 , **NAFEMS,** International Journal of CFD Case Studies, 1998.

Edited by Paul Tucker, this contains 5 articles by various authors, describing CFD applications with educational value as follows:

- Modelling of atmosphere dispersion near buildings, by R C Hall and I R Cowan,
- Mixing in a ventilation system tee junction, by S J Graham,
- Installation and viscosity effects in turbine meters, by A N Neal and D McEwen,
- Heat transfer in offshore pipeline bundles, by A Mosquera, G Paczkowski and J Brydon,
- CFD study of a steam condenser, by N Rhodes and M Swain.

CFDJ2 , **NAFEMS,** International Journal of CFD Case Studies, 2000.

Edited by Paul Tucker, this contains 5 articles by various authors, describing CFD applications with educational value as follows:

- The computation of axi-symmetric rotor-stator flows related to cooling passages of electric generators, by H Iacovides, M A Leschziner and H Y Li,
- CFD validation of incompressible cross-flow discharge coefficients, by Q G Rayer,
- Fluent validation for incompressible flow through a 0.5 aspect ratio orifice and compressible flow through a sharp edged slit, by Q G Rayer and G D Snowsil,
- Numerical study on design parameters of a channel with offset heated by radiation, based on maximum forced convection heat transfer coefficient and minimum friction factor, by A H H Ali,
- Prediction of transient and steady flow in an electronic/mechanical system, by Z Pan and P G Tucker.

CFDJ3 , **NAFEMS,** International Journal of CFD Case Studies, 2001.

Edited by Paul Tucker, this contains 5 articles by various authors, describing CFD applications with educational value as follows:

- Recent advances in CFD for industrial multiphase flows, by Simon Lo,
- Numerical and experimental simulation, by P W James, J P Hughes and T E R Jones,
- Fluid-structural interactions in industrial applications by CFD/FEM coupling, by C Haack and T Wintergerste,
- Development of a finite volume non-orthogonal, collocated grid based algorithm for solution of incompressible N-S equations in complex geometries, by D G Roychowdhury, Sarit Kumar Das and T S Sundararajan,
- Computational fluid dynamics guidelines for the best working practise, by Q G Rayer.

CFDJ4 , **NAFEMS,** International Journal of CFD Case Studies, 2004.

Edited by Anthony Green, this contains 5 articles by various authors, describing CFD applications with educational value as follows:

- The application and validation of a CFD analysis to simulate the flow into a helicopter engine intake, by A de Souza,
- A methodology for industrial CFD, by J Shaikh,
- CFD validation for external aerodynamics Part 1: Validating component analysis, by R Lewis and P Postle,
- CFD validation for external aerodynamics Part 2: Full car validation, by R Lewis and P Postle,
- A validation strategy for the CFD modelling of coal-fired equipment, by A S Green and M L Waite.

CFDJ5 , **NAFEMS,** International Journal of CFD Case Studies, 2005.

Edited by Anthony Green, this contains 8 articles by various authors, describing CFD applications with educational value as follows:

- Free surface jet flow interaction with a pelton bucket, by F A Muggli and T Wintergerste,
- Lattice-Boltzmann methods - basics and recent progress, by M Krafczyk and J Tölke,
- Numerical simulation of coolant mixing at the ROCOM test facility with CFX-4 and CFX-5 based on complex meshes, by T Höhne,
- Turbulence modelling for technical flows, by F R Menter,
- Simulation of a plasma enhanced μ-jet-CVD process, by C Dehning, A Holländer, A-M Leventi-Peetz and K Silmy,
- CμFD: simulation of micro-fluidic systems, by F Schönfeld, K S Drese and S Hardt,
- Numerical simulation of coupled fluid-solid problems: state of the art and applications, by M Schäfer,
- Numerical analysis of material flow in continuously reinforced extrusion of profiles, by M Schikorra, M Schomäcker and M Kleiner.

CFDJ6 , **NAFEMS,** International Journal of CFD Case Studies, 2007.

Edited by Anthony Green, this contains 5 articles by various authors, describing CFD applications with educational value as follows:

- Simulation of the airbag deployment process in “out of postiotn” load-cases, by U Göhner and A Haufe,
- Simulations of viscoelastic polymer solution flows, by D Niedziela, A Latz and O Iliev,
- Simulation of flows in complex geometries: new meshing and solution methods, by M Perić,
- Coal combustion - partial validation of a complex problem, by P L Stephenson,
- IMPNS computations of the X-15 flight vehicle: a validation and verification case study, by S Shaw, M Mifsud, B Wagner, A Moureaux and J Bennett.

CFDJ7 , **NAFEMS,** International Journal of CFD Case Studies, 2008.

Edited by Anthony Green, this contains 5 articles by various authors, describing CFD applications with educational value as follows:

- Simulation of turbulent swirling flows: gas turbine combustor application and verification, by A C Benim, P J Stopford, E Buchanan and K J Syed,
- Initial validation of cross wind effects on a static high-sided vehicle, by D M Hargreaves and H P Morvan,
- Simulation of flows with free surface, by S Muzaferija and M Perić,
- A weak compressible flow solution for fluid and air-borne acoustics coupled problems in a nonlinear system, by M Zhu, A Tabbal, M Megahed, G Pierrot and P Ravier,
- Calculation of the characteristic diagram of an axial fan using CFD, by T Wolfanger and M Lenartz.