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2008 8th: Pau PDF Print
8th IATP Meeting
Pau, 4 September 2008

Program in .pdf format

Press here to download more photos (thank you Fernando Caetano)


The meeting was opened by the Chairman, Prof . W.A. Wakeham, who welcomed all present and thanked Prof. Chr. Boned and Dr A. Baylaucq for the excellent arrangements as the local organisers of the meeting.
The meeting was divided into the usual scientific session and a business session. The proceedings are recorded here in that order. A list of attendees is at the end.


2.1. Molecular Dynamics Simulations of Fluids Thermophysical Properties. Case of Hydrogen Sulfide.
C. Boned, G. Galliero (France)

2.2. Predicting the Viscosity of Liquid Mixtures: New Developments
A. de Wijn, N. Riesco, J.P.M. Trusler, G. Jackson, V. Vesovic (UK)

2.3. Calculation of the Second Pressure Virial Coefficient, Viscosity, and Thermal Conductivity
of Methane from an ab initio Potential
E. Vogel, R. Hellmann, E. Bich (Germany), A.S. Dickinson, V. Vesovic (UK)

2.4. On the Application of the Transient Hot-Wire Technique in the Measurement of the Thermal Conductivity of Solids
M.J. Assael, D.Tzetzis, K. Antoniades (Greece)

2.5 Thermophysical Properties of Ionic Liquids
C.A. Nieto de Castro (Portugal)

2.6. Improved Understanding of the Resonance Frequency of Vibrating-Wire Sensors
J.P.M. Trusler, F. Ciotta, V. Vesovic (UK)

2.7. Dynamic Light Scattering (DLS) for the Characterization of Ionic Liquids
A. Froeba, H. Kremer, A. Leipertz (Germany)

2.8. The Fractional Stokes-Einstein Equation: Its Utility for Liquids at High Pressure
K. Harris (Australia)

2.9. Pressure-Viscosity Coefficients for Molecular and Ionic Liquids through a thermodynamic scaling.
A.S. Pensado, M.J. Comunas, (Spain), A.A.H. Padua (France), J. Fernandez (Spain)

Each presentation engendered discussion and a few points of special interest are noted here:
  1. Dr Galliero explained that although 1/3 of the natural gas produced incorporates H2S, which is highly dangerous, very few data exist for this component. Molecular dynamic calculations performed in their laboratory, deviated from experimental values up to 2% for density and 16% in the case of viscosity. Large deviations with the REFPROP software were observed. Work is still in progress

  2. Dr Vesovic presented an improved model for the viscosity of liquid mixtures, where liquids are considered as chains of rigid spheres. The model depends upon the radial distribution function and the excluded volumes of two colliding chains. The model seems to be a good improvement over previous attempts. Prof. Vogel demonstrated highly accurate zero density viscosity and thermal conductivity correlations for methane, and compared them with existing data.

  3. Prof Assael demonstrated the good operation of the transient hot-wire technique for solids, for the measurement of the thermal conductivity with an uncertainty of about 1%.

  4. In relation to ionic liquids:
    - Prof Nieto de Castro showed that although ionic liquids have become more widely used today, still very large discrepancies exist between the data, and presented the problems arising with the measurement of viscosity and thermal conductivity of ionic liquids.
    - Dr Froeba presented also problems associated with the prediction of the viscosity and binary difusion coefficient of ionic liquids
    - Prof Harris presented his recent work in high pressure viscosity and self diffusion coefficient in pure ionic liquids, and showed that above Tg, most molecular and ionic liquids showed fractional Stokes-Einstein behaviour

  5. Prof Tusler presented further very interesting modifications and refinements of the model of the vibrating wire viscometer.

  6. Finaly Prof Fernandez discussed interesting developments in the viscosity-pressure behaviour of lubricants, molecular and ionic liquids.


The following projects were deemed to have been concluded:
  1. Investigation of a New High-Viscosity Standard
    J.M.N.A. Fareleira, C.M.B.P. Oliveira (Portugal), M.J. Assael (Greece), A. Leipertz, H. Bauer (Germany), A. Nagashima (Japan)
    Paper has been submitted under the auspices of IATP. F.J.P. Caetano, J.M.N.A. Fareleira, A.P. Froba, K.R. Harris, A. Leipertz, C.M.B.P. Oliveira, J P.M. Trusler, W.A.Wakeham, An Industrial Reference Fluid for Moderately High Viscosity, J. Chem. Eng. Data 53, 2003-2011 (2008). DOI: 10.1021/je800059n.

  2. On the Book on the Properties of Water, Air and Sea Water
    A. Nagashima (Japan), M.J. Assael (Greece), J. Millat (Germany).
    It was decided that the book will be placed as an e-book in the IATP site following its review by two IATP members.

  3. Feasibility Study on Properties of Ionic Fluids
    E. Vogel (Germany), KN.. Marsh (New Zealand), A. Padua (France), J.M.N.A. Fareleira (Portugal)
    Project is ended in its present form because work is moving on

  4. Preliminary Investigation for Recommended Values for Viscosity and Density of Molten Metals.
    M.J. Assael (Greece), Y. Sato (Japan)
    Project is ended in its present form.

  5. Diffusion coefficients on Liquid Systems
    J. Winkelmann (Germany)
    Project is ended albeit incomplete.

The following project was discussed and it was agreed to continue it:
  1. Viscosity and Thermal Conductivity of Water & Steam
    M.J. Assael (Greece), E. Vogel, J. Millat (Germany), A. Nagashima (Japan), D. Friend, J.V. Sengers (USA)

The following projects were discussed and they were agreed to start:
  1. Reviews of Modern Viscosity Measurement Techniques
    A.H.R.C. Goodwin(USA), W.A. Wakeham(UK) and M.J. Assael (Greece) and colleagues to be determined

  2. Density and Viscosity of Molten Metals Cu, Sn, Ti?
    M.J. Assael (Greece), W.A. Wakeham (UK)I. Egry (Germany), P. Quested (UK), J.T. Wu (R.P. China), E. Kaschnitz (Austria) and colleagues to be determined

  3. Short Review Paper on Evaluation of Existing Thermal Conductivity Measurements
    M.J. Assael (Greece), J. Wu (R.P. China) and colleagues to be determined

  4. Evaluation of the viscosity effect upon the vibrating U-tube Densimeter
    J.P.M. Trusler (UK), J. Fernandez (Spain) and colleagues to be determined

  5. High Viscosity Standards
    J.M.N.A. Fareleira (Portugal), W.A. Wakeham (UK), A.P. Froba (Germany), A. Leipertz (Germany), K. Harris (Australia), A.R.H. Goodwin (USA), J. Fernandez (Spain), B. Rathke (Germany), F. Caetano (Portugal)

  6. Ionic Liquids Standard Viscosity, Thermal Conductivity, Diffusion and Other Properties
    C.A. Nieto de Castro (Portugal) and colleagues to be determined.

It was agreed that with the circulation of the minutes, the Secretary would remind members that they could offer to join any of the working teams for these new projects. Subsequently during the year a list of the projects and teams would be distributed and posted in the IATP www site.


The following scientists were invited to become Members of IATP

  • Prof. Jiangtao Wu, Center of Thermal and Fluid Science, School of Energy and Power Engineering
    Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R CHINA
    EMail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

  • Dr Guillaume Galliero, Laboratoires des Fluides Complexes, Faculty of Sciences
    University of Pau, UMR CNRS 5150, BP 1155, 64013 Pau Cedex, FRANCE
    EMail : This e-mail address is being protected from spambots. You need JavaScript enabled to view it

  • Prof. Dr. Sergio E. Quinones-Cisneros, Instituto de Investigaciones en Materiales
    Materials Research Institute, UNAM, Apdo. Postal 70-360 Cto. Exterior
    Cd. Universitaria, Mexico DF 04510, MEXICO
    Tel.: (+52) 55 5622 4587, Fax: (+52) 55 5622 4602
    EMail : This e-mail address is being protected from spambots. You need JavaScript enabled to view it & This e-mail address is being protected from spambots. You need JavaScript enabled to view it

The following dates and places of the IATP meetings were decided

5.1. 9th IATP Meeting, 2009
The 9th IATP Meeting will take place on Saturday 20 and Sunday 21, in June 2009, prior to the Symposium on Thermophysical Properties in Boulder (21-26 of June). Dr Rich Perkins will be asked whether he can be the local host.

5.2. 10th IATP Meeting, 2010
The 10th IATP Meeting wil take place in Santiago, Spain in middle of June. Local host will be Prof R. Fernandez.

5.3. 11th IATP Meeting, 2011
The 11th IATP Meeting will take place in Thessaloniki, near the time of the 19th ECTP which will also occur in the same place.


List of People that attended the meeting
1) Prof. William A. Wakeham (UK), Chairman
2) Prof. Marc J. Assael (Greece), Secretary
3) Prof. Carlos Nieto de Castro (Portugal)
4) Dr Fernando Caetano (Portugal)
5) Prof. Alfred Leipertz (Germany)
6) Prof. Akira Nagashima (Japan)
7) Dr Antony Goodwin (USA)
8) Prof. J.P. Martin Trusler (UK)
9) Prof. Ken Harris (Australia)
10) Dr Arno Laesecke (USA)
11) Mr Nicolas Riesco (UK)
12) Prof. Velisa Vesovic (UK)
13) Prof. Joao M.N. Fareleira (Portugal)
14) Prof. Eckhard Vogel (Germany)
15) Dr Daniel Buttig (Germany)
16) Dr Daniel Seibt (Germany)
17) Prof. Jiangtao Wu (P.R. China)
18) Prof. Antoine Baylaucq (France)
19) Dr Henning Wolf (Germany)
20) Dr Harro Bauer (Germany)
21) Dr Ulf Hammerschmidt (Germany)
22) Dr Wolfgang Hohenauer (Austria)
23) Dr Bernd Rathke (Germany)
24) Dr Andreas Froeba (Germany)
25) Dr Alfonso Sanmartin/Pensado (Spain)
26) Dr Maria J.P. Comunas (Spain)
27) Dr Luis Lugo (Spain)
28) Prof. Sergio Quinones-Cisneros (Mexico)
29) Prof. Christian Boned (France)
30) Dr Patsy V. Ramirez-Gonzalez (Mexico)
31) Mr Xiaopo Wang (P.R. China)
32) Prof. Jurij Avsec (Slovakia)
33) Prof. Masatoshi Yoshimura (Japan)
34) Mr Yasutaki Miyake (Poland)
35) Mr Jean Patrick Bitzile (France)
36) Dr Guillaume Galliero (France)
37) Dr Alberto Garcia Quivoz (Mexico)
38) Prof. Josefa Fernandez
39) Mr. Jianguo Yin (R.P. China)




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