Alf-Erik Almstedt

Professor Emeritus at Fluid Dynamics

Alf-Erik Almstedt is professor of multiphase flow and Senior Adviser at the Department of Mechanics and Maritime Sciences.

Source: chalmers.se
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Showing 44 publications

2015

The crucial role of frictional stress models for simulation of bubbling fluidized beds

Meisam Farzaneh, Alf-Erik Almstedt, Filip Johnsson et al
Powder Technology. Vol. 270 (Part A), p. 68-82
Journal article
2013

A Study of Fuel Particle Movement in Fluidized Beds

Meisam Farzaneh, Srdjan Sasic, Alf-Erik Almstedt et al
Industrial & Engineering Chemistry Research. Vol. 52 (16), p. 5791-5805
Journal article
2013

Eulerian-Eulerian-Lagrangian Simulation of Fuel Mixing in Fluidized beds

Meisam Farzaneh, Alf-Erik Almstedt, Filip Johnsson et al
8th International Conference on Multiphase Flow ICMF 2013, Jeju, Korea, May 26 - 31, 2013
Paper in proceeding
2013

Simulation of Fuel Mixing in Fluidized Beds using a Combined Tracking Technique

Meisam Farzaneh, Alf-Erik Almstedt, Filip Johnsson et al
Fluidization XIV, 2013, Noordwijkerhout, The Netherlands
Paper in proceeding
2011

A novel multigrid technique for lagrangian modeling of fuel mixing in fluidized beds

Meisam Farzaneh, Srdjan Sasic, Alf-Erik Almstedt et al
Chemical Engineering Science. Vol. 66 (22), p. 5628-5637
Journal article
2010

Dynamics of fibres in a turbulent flow field – A particle-level simulation technique

Srdjan Sasic, Alf-Erik Almstedt
International Journal of Heat and Fluid Flow. Vol. 31 (6), p. 1058-1064
Journal article
2010

A Novel Multigrid Approach for Lagrangian Modeling of Fuel Mixing in Fluidized Beds

Meisam Farzaneh, Srdjan Sasic, Alf-Erik Almstedt
Proceedings of the International Conference on Multiphase Flow, Tampa, 2010
Paper in proceeding
2010

A novel multigrid approach for Lagrangian modeling of fuel mixing in fluidized beds

Meisam Farzaneh, Srdjan Sasic, Alf-Erik Almstedt et al
Proc. of IMFC2010, International Conference on Multiphase Flow (Tampa, USA)
Paper in proceeding
2009

Dynamics of fibres in a turbulent flow field - a novel particle-level simulation technique

Srdjan Sasic, Alf-Erik Almstedt
14th International Conference on Modelling Fluid Flow, CMFF 09 Budapest
Paper in proceeding
2008

Individual fibre in an arbitrary flow field - true direct numerical simulation (DNS) using an implicit immersed boundary method

Srdjan Sasic, Berend van Wachem, Alf-Erik Almstedt et al
11th International Conference on Multiphase Flow in Industrial Plants
Paper in proceeding
2007

Discrete element simulations and experimental validation of particle packing in a 5 mm chromatography column.

Rasmus Hemph, Joakim Svensson, Berend van Wachem et al
Sixth International Conference on Multiphase Flows, Leipzig
Paper in proceeding
2006

DEM Modeling of Hopper Flows: Comparison and Validation of Models and Parameters

Rasmus Hemph, Berend van Wachem, Alf-Erik Almstedt
AIChE, Proc. Fifth World Congress on Particle Technology, Orlando, Florida
Paper in proceeding
2006

Experimental validation of CFD models for fluidized beds: Influence of particle stress models, gas phase compressibility and air inflow models

Klas Johansson, Berend van Wachem, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 61 (5), p. 1705-1717
Journal article
2005

Dual fibre optical probe measurements of solids volume fraction in a circulating fluidized bed

Anna Magnusson, Robert Rundqvist, Alf-Erik Almstedt et al
Powder Technology. Vol. 151 (1-3), p. 19-26
Journal article
2004

Comparison of CFD models for fluidized beds - particle models, solvers and experimental validation

Klas Johansson, Berend van Wachem, Alf-Erik Almstedt
Proceedings of the 3d international symposium of two-phase flow modelling and experimentation, Pisa, Italy
Paper in proceeding
2004

Hydrodynamics and steel tube wastage in a fluidized bed at elevated temperature

Kent Johansson, Rikard Norling, Anders Hjörnhede et al
Chemical Engineering Science. Vol. 59, p. 31-40
Journal article
2003

Methods for multiphase computational fluid dynamics

Berend van Wachem, Alf-Erik Almstedt
Chemical Engineering Journal. Vol. 96 (1-3), p. 81-98
Journal article
2003

Application of wedge-shaped hot-film probes in a gas-particle flow

Bert Johansson, Camilla Ljus, Alf-Erik Almstedt
Experimental Thermal and Fluid Science. Vol. 27 (2), p. 187-191
Journal article
2003

Dual optical fibre measurements of the particle concentration in gas/solid flows

Robert Rundqvist, Anna Magnusson, Berend van Wachem et al
Experiments in Fluids. Vol. 35, p. 572-579
Journal article
2002

The hydrodynamics of a 3D wurster type fluidized bed.

Anna Magnusson, Berend van Wachem, Alf-Erik Almstedt
AIChE Annual Meeting, Indianapolis
Paper in proceeding
2002

Turbulence modification by particles in a horizontal pipe flow

Camilla Ljus, Bert Johansson, Alf-Erik Almstedt
International Journal of Multiphase Flow. Vol. 28 (7), p. 1075-1090
Journal article
2001

Study of two gas-particle flows using Eulerian/Eulerian two-fluid models.

Klas Johansson, Anna Magnusson, Robert Rundqvist et al
Fourth International Conference on Multiphase Flows, New Orleans
Paper in proceeding
2000

Two-fluid modelling of cooling-tube erosion in a fluidized bed

Mattias Gustavsson, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 55 (4), p. 867-879
Journal article
2000

Numerical simulation of fluid dynamics in fluidized beds with horizontal heat exchanger tubes

Mattias Gustavsson, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 55 (4), p. 857-866
Journal article
2000

Frequency response correction of hot-film measurements in a turbulent airflow

Camilla Ljus, Bert Johansson, Alf-Erik Almstedt
Experiments in Fluids. Vol. 29, p. 36-41
Journal article
1999

Fluid dynamics of a pressurized fluidized bed: comparison between numerical solutions from two-fluid models and experimental results

Hans Enwald, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 54 (3), p. 329-342
Journal article
1999

Eulerian modelling of pulp-fibre transport in airflow

Camilla Ljus, Alf-Erik Almstedt
Proc. 2nd Int. Symp. on Two-Phase Flow Modelling and Experimentation, Pisa, p. 1553-1560
Paper in proceeding
1999

Simulation of the fluid dynamics of a bubbling fluidized bed. Experimental validation of the two-fluid model and evaluation of a parallel multiblock solver

H. Enwald, E. Peirano, Alf-Erik Almstedt et al
Chemical Engineering Science. Vol. 54 (3), p. 311-328
Journal article
1998

Influence of pressure, fluidization velocity and particle size on the hydrodynamics of a freely bubbling fluidized bed

Jan Wiman, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 53 (12), p. 2167-2176
Journal article
1997

Hydrodynamics, erosion and heat transfer in a pressurized fluidized bed: influence of pressure, fluidization velocity, particle size and tube bank geometry

Jan Wiman, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 52 (16), p. 2677-2695
Journal article
1996

Eulerian two-phase flow theory applied to fluidization

Hans Enwald, Eric Peirano, Alf-Erik Almstedt
International Journal of Multiphase Flow. Vol. 22 (Suppl. 1), p. 21-66
Journal article
1995

Hydrodynamics of a pressurized fluidized bed with horizontal tubes: Influence of pressure, fluidization velocity and tube-bank geometry

Elisabet Olsson, Jan Wiman, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 50 (4), p. 581-592
Journal article
1995

Erosion of horizontal tubes in a pressurized fluidized bed - Influence of pressure, fluidization velocity and tube-bank geometry

Jan Wiman, Bahram Mahpour, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 50 (21), p. 3345-3356
Journal article
1995

Dimensionless expansion model for bubbling fluidized beds with and without internal heat exchanger tubes

Hans Löfstrand, Alf-Erik Almstedt, Sven B Andersson
Chemical Engineering Science. Vol. 50, p. 245-253
Journal article
1993

An investigation of fluidized-bed scaling: heat transfer measurements in a pressurized fluidized-bed combustor and a cold model bed

Hans Ackeskog, Alf-Erik Almstedt, Victor Zakkay
Chemical Engineering Science. Vol. 48 (8), p. 1459-1473
Journal article
1992

Hydrodynamics of a bubbling fluidized bed: influence of pressure and fluidization velocity in terms of drag force

Per Olowson, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 47 (2), p. 357-366
Journal article
1991

Influence of pressure on the minimum fluidization velocity

Per Olowson, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 46 (2), p. 637-640
Journal article
1990

Influence of pressure and fluidization velocity on the bubble behaviour and gas flow distribution in a fluidized bed

Per Olowson, Alf-Erik Almstedt
Chemical Engineering Science. Vol. 45 (7), p. 1733-1741
Journal article
1990

An investigation of fluidized-bed scaling—capacitance probe measurements in a pressurized fluidized-bed combustor and a cold model bed

Alf-Erik Almstedt, Victor Zakkay
Chemical Engineering Science. Vol. 45 (4), p. 1071-1078
Journal article
1987

Distribution of the gas flow in fluidized beds with a slugging behaviour

Alf-Erik Almstedt
Chemical Engineering Science. Vol. 42 (3), p. 581-590
Journal article
1987

Measurements of the bubble behaviour and the oxygen distribution in a pilot scale pressurized fluidized bed burning coal

Alf-Erik Almstedt, Evert Ljungström
ASME, Proc. 9th Int. Conf. on Fluidized Bed Combustion, Boston. Vol. 1, p. 575-585
Paper in proceeding
1985

Measurements of bubble behaviour in a pressurized fluidized bed burning coal, using capacitance probes - Part II

Alf-Erik Almstedt
DOE, Proc.8th Int. Conf. on Fluidized Bed Combustion, Houston. Vol. 2, p. 865-877
Paper in proceeding
1982

Measurements of bubble behaviour in a pressurized fluidized bed burning coal, using capacitance probes

Alf-Erik Almstedt, Erik Olsson
DOE, Proc. 7th Int. Conf. on Fluidized Bed Combustion, Philadelphia. Vol. 1, p. 89-98
Paper in proceeding

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