2014 14th: Porto

14th IATP Meeting
Porto, 31st August 2014

 Program in .pdf format 


The meeting was opened by the Chairman, Prof. Sir William Wakeham, who welcomed all present and thanked Prof. Luis M.N.B.F. Santos and Dr Marisa-Alexandra Rocha for the excellent arrangements as the local organiser of the meeting. The meeting was divided into the usual scientific session and business session. The proceedings are recorded here in that order.



 2.1.   Diffusion Coefficients of Binary Mixtures of 1-Ethyl-3-methylimidazolium Tetracyanoborate with Dissolved Gases by Dynamic Light Scattering and Molecular Dynamics Simulations
  T.M.Koller, A. Heller, M.H. Rausch, I.G. Economou, A.P. Fröba (Germany).

2.2.     Vibrating-wire Viscometry in Highly-Conductive Fluids
C. Calabrese, G.C. Maitland, Μ. McBride-Wright. J.P.M. Trusler (UK).

 2.3.    A New Portable Absolute 2-wires Transient Hot-Wire Instrument for the Measurement of the Thermal Conductivity of Solids & Fluids
M.J. Assael, K.D. Antoniadis, I.N. Metaxa, S.K. Mylona., G. Matziaroglou, V. Efopoulos, J.-A.M. Assael,. K. Marini (Greece), J. Wu, M.X. Hu (P.R. China).

 2.4.    Current Developments in IoNanofluids Thermophysical Properties
C.A.N. de Castro, J.M. Franca, M.J.V. Lourenco, F.J.V. Santos, S.M.S. Murshed (Portugal).

 2.5.  After 20 years of Nanofluids, are we Anywhere Nearer in Predicting their Thermal Conductivity Enhancement? 
G. Tertsinidou, E.K. Michailidou, I.N. Metaxa, M.J. Assael (Greece), W.A. Wakeham (UK)

 2.6.  An Improved Kinetic Theory Approach for Calculating the Thermal Conductivity of Polyatomic Gases
R. Hellmann, E. Bich (Germany).

2.7.    On the Mobility of Dialkyladipates
J. Ascenso, G. Rubio, J.C.F. Diogo, J.M.N.A. Fareleira (Portugal).

 2.8.    Characterization of the Temperature Dependence of the Viscosity and Density of Several Perfluoro-polyether Oils
T. J. Fortin, A. Laesecke (USA).

2.9.    Reference Correlation of the Viscosity of Cyclohexane from the Triple Point to 873 K and up to 110 MPa.
U. Tariq, A.R.B. Jusoh, N. Riesco, V. Vesovic (UK).

 2.10.  International Standards for Viscosity in Broad Ranges of Temperature and Pressure: Squalane and Krytox 102
M.J.P. Comuñas, F.M. Gaciño, X. Paredes, J. Fernández (Spain), K.R. Harris (Australia), J.P. Bazile,  C. Boned, J.L. Daridon, G. Galliero, J. Pauly (France), S.K. Mylona, M.J. Assael (Greece), A.R.H. Goodwin (USA). 

2.11.  High-pressure Viscosity Standards for the Calibration and Validation of Equipment Designed for the Accurate Measurement of the Viscosity of Heavy Oils
C.D. Castillo Gómez, H. Quiroz Villareal, S.E. Quiñones-Cisneros (Mexico).

2.12.   Assessment of thermal probe for measurement of thermal conductivity
B. Ruet, H. Humaish, L. Marmoret, H. Béji (France).

 2.13.   Research at the Technische Thermodynamik Bremen at a Glance
B. Rathke, J. Kiefer (Germany). 

2.14.  High-Viscosity Reference Liquids at High Pressures
J.C.F. Diogo, F.J.P. Caetano, J.M.N.A. Fareleira (Portugal).

2.15.  CoolProp - An Open-source Reference-grade Thermophysical Property Library for the 21st century
I. Bell, S. Quoilin, V. Lemort (Belgium), J. Wronski (Denmark)


Each presentation engendered discussion and a few points of special interest are noted here:

-      T.M. Kolier showed that DLS mutual diffusion coefficient measurements of binary mixture of [EMIM][ B(CN)4] with dissolved CO2, N2, CO and H2, were in good agreement (with the exception of H2) with molecular dynamic simulation results.
-   Problems associated with the electrical conductivity in the measurement of the viscosity of ionic liquids with the vibrating-wire technique, were discussed by C. Calabrese. Encouraging preliminary results were obtained by correlating additional damping with electrical conductivity.
-   M.J. Assael presented a new portable absolute two-wire transient hot wire instrument.
- J.M.N.A Fareleira reviewed the viscosity and self-diffusion measurements of dialkyladipates.
-   T.J. Fortin discussed viscosity measurements of perfluoro-polyether oils. These are non-flammable, chemical inert fluids that could be employed as high-temperature high-pressure viscosity standard fluids.However tests of two different lots of the same Krytox-102 sample indicated a significant difference in the viscosity.
-   A new viscosity reference correlation for cyclohexane from the triple Point to 873 K and up to 110 MPa, was presented by V. Vesovic.
-   In the area of new high-viscosity standards, J. Fernandez presented the collective results of two new viscosity reference correlations for squalane, one at atmospheric pressure and  273-373 K, and the other up to 200 MPa pressure. She also presented preliminary measurements of the viscosity of Krytox in the temperature range 273-373 K 0.1 MPa, and up to 225 MPa.
-   TOTM was presented by F.J.P. Caetano as another possible high-viscosity reference liquid that needs more tests to be carried out.
-   S.E. Quiñones-Cisnero described an accurate procedure developed for the HP viscosity correction, with which the reference viscosity of commercial  standards has been extended to 100 MPa.
-   L. Marmoret discussed the uncertainty of a commercial transient hot-probe employed for the measurement of the thermal conductivity of building materials.
-   B. Rathke presented recent research at the Technische Thermodynamik Bremen.
-      I. Bell presented CoolProp, a new open-source software for the calculation of the thermophysical properties of fluids. 

In the field of nanofluids:
-      C.A. Nieto de Castro discussed the state-of-the-art measurements of the density, viscosity and thermal conductivity of ionanofuids.
-      W.A. Wakeham discussed the “hot” subject of the thermal conductivity enhancement when nanoparticles are added to liquids. By comparing measurements from different authors, he pointed out that no extraordinary behavior is observed, while on the other hand too many “bad” measurements are reported. 

On the theoretical side:
-      R. Hellmann described the advantages in employing the three-flux approach for calculating the dilute-gas thermal conductivity of polyatomic gases in relation to the two-flux approach.







The following projects were discussed and it was agreed to continue them:

1.    Reference correlations for the viscosity and thermal conductivity of fluids over extended temperature and pressure ranges.
S.K.Mylona,E.K. Michailidou, E. Sykioti, S. Avgeri, M.J. Assael (Greece), M.L. Huber, R.A. Perkins (USA)

a)     Prof. M. Assael informed that so far, through the excellent cooperation of his laboratory and NIST, the following reference correlations over extended temperature and pressure conditions, have been published in JPCRD
-  Thermal conductivity: n-H2, p-H2, SF6, CO2, ­n-hexane, n-heptane, benzene, toluene, o-, m-, p-xylene, ethylbenzene, methanol, ethanol (cycloohexane and pentane on the way)
-  Viscosity: n-hexane, n-heptane, benzene (toluene on the way)

b)    Prof. V. Vesovic and Dr N. Riescoinformed IATP that they were also producing reference correlations for
- Viscosity                 :    Cyclohexane just published in JPCRD (and n-hexadecane, p-xylene on the way)

c)    Prof. E. Vogel’s group had informed IATP (in Bremen) that his group was also producing reference corre­lations for
- Viscosity                 :    ethane, propane, and n- and i-butane.

These are recorded here so that readers will avoid unnecessary overlap of effort.

Some discussion took place in relation to the difficulties associated with IATP reviewers. According to the established procedures, for a paper to be published  “under the auspices of IATP”, at least one of the executive members had to review the paper; to ensure maintenance of standards. It was not intended as a full review of the paper, nor to delay publication.  The system was under some pressure because the number of Executive members was diminishing and everybody was busier.It was thought that the number of executive members should be increased and the Chairman would invite a number of additional members to participate in the process.


2.     High-temperature high-pressure viscosity standards
J.M.N.A. Fareleira, F. Caetano (Portugal), W. A. Wakeham, J.P.M. Trusler (UK), A.P. Froba, A. Lei-pertz, B. Rathke (Germany), K.R. Harris (Australia), A.R.H. Goodwin, A. Laesecke (USA), J. Fernandez (Spain), K. Schmidt (Canada), Chr. Boned (France)
Prof. J. Fernandez informed everyone of the progress achieved so far by the group headed by her. Thus
-      At 0.1 MPA, a paper under the auspices of IATP has already been published, as:
Comuñas M.J.P., Paredes X., Gaciño F., Fernández J., Bazile J.P.,  Boned C., Daridon J.L., Galliero D.G., Pauly J., Harris K.R.,  Assael M.J., and Mylona S.K., “Reference Corre­lation of the Viscosity of Squalane from 273 to 373 K at 0.1 MPa”, J. Phys. Chem. Ref. Data 43:?:1-9 (2013). DOI: dx.doi.org/10.1063/1.4812573

- At higher pressures, a paper under the auspices of IATP has already been published, as:
Mylona S.K., Assael M.J., Comunas M.J.P., Paredes X., Gacino F.M., Fernandez J., Bazile J.P., Boned C., Daridon J.L., Galliero G., Pauly J., and Harris K.R., “Reference Correlation for the Density and Viscosity of Squalane from 273 to 473 K at pressures up to 200 MPa”, J. Phys. Chem. Ref. Data 43: 013104:1-11 (2014). DOI: 10.1063/1.4863984

In addition, a sample of Krytox GPL 102 has been circulated to many members of the group, and Prof. J. Fernandez has started collecting the measurements. Several members showed interest in receiving a sample of the same lot.
Both these two fluids will be included in the IUPAC proposal on “International standard for viscosity at temperatures up to 473 K and pressures below 200 MPa” (Dr A. Goodwin, Prof. JPM.Trusler, Prof. R.M. Enick, Prof. J. Fernandez, and Prof. M.J. Assael).
Another liquid to consider is tris (2-ethylhexyl) trimilitate TOTM (has an estimated value of 10 mPa s at 200 MPa), and several members have shown interest to proceed the study of ths fluid.


3.     Three new volumes on experimental thermodynamics series published under the auspices of IUPAC
W.A. Wakeham - Coordinator, V. Vesovic (UK), A. Goodwin, M. Huber, J. Sengers (USA), M.J. Assael (Greece)
Prof. Sir William Wakeham informed everyone that
-  Vol. IX is already published as,
“Experimental Thermodynamics Volume IX: Advances in Transport Properties of Fluids”, Assael M.J., Goodwin A.R.H., Vesovic V. and Wakeham W.A. Eds., RSC Press., London U.K. (2014) - 408 pages. ISBN-13: 978-1849736770

-      For Vol. X  (Non-Equilibrium Thermodynamics), is well under way, with chapters submitted in September, while

-      Vol. XI (Industrial Applications), had been a part of the original project put to IUPAC.  There was now some doubt about the willingness of industrial colleagues to act as authors so the Chairman will seek additional input to ensure the volume can still be prepared.  To that end, while Prof. V. Vesovic and Dr M.L. Huber remain on the editorial team, Dr. A Goodwin,  Dr E. May and Dr. M. Frenkel may be invited to join. The Chairman will report back at the next meeting.


4.     Round Robin project on ionic liquids viscosity, and thermal conductivity measurements
J.M.N.A. Fareleira, C.A. Nieto de Castro (Portugal),  A. Leipertz, A. Fröba, U. Hammer¬schmidt, B. Rathke (Germany), J. Fernandez (Spain), R. Perkins (USA), K. Harris (Australia), M.J. Assael (Greece)
Postponed indefinitely.


5.     Mexico research perspectives in the rheology of heavy oils + CO2.
S.E. Quiñones-Cisneros (Mexico), J.P.M. Trusler (UK)
Project continues.



6.     Diffusion nomenclature in the IUPAC Definitions of Symbols & Units
During the preparation of Volume IX discussed above it became clear that the literature was confused about nomenclature and symbolism in the field of diffusion.  The current IUPAC section on this topic was singularly unhelpful. An IUPAC project proposal had been submitted to the IUPAC Physical Chemistry Division by Dr. A Goodwin and the Chairman with an hypothetical project team. The proposal has been funded and it now needs formation of the real team to do the work.  Prof. Vitor Lobo of the University of Coimbra will lead the project and will assemble an appropriate team. It would include Prof. K.R. Harris, the Chairman and Dr. A.R.H. Goodwin for a good connection to IUPAC and the Green Book.  Dr. K. Marsh also volunteered to join and Prof. Lobo may identify further members.



Prof. M.J. Assael reminded everyone that all information about IATP activities, as well as the current list of members, can always be found at

https://ltpep.com/   -> I.A.T.P.

It was also decided that members who had not attended for some time, and where there was evidence that they would not have a continuing connection, would be removed form the list.
No new members were put forward for approval.



5.1. 15th IATP Meeting, 2015
The 15th IATP Meeting will take place on Sunday June 21st in Boulder, Colorrado, in 2015, just prior to the 19th ECTP (June 21st – June 26th 2015). Dr R.A. Perkins will be invited to be the local organiser and the Secretary will contact him.

5.2. 16th IATP Meeting, 2016
The 16th IATP Meeting will take place in Imperial College, London, UK. Prof. J.P. Martin Trusler will be the local organiser. The exact date will be announce in due course.

5.3. 17th IATP Meeting, 2017
The 17th IATP Meeting will take place on Sunday September 3rd in Gratz, Austria, in 2017, just prior to the 21st ECTP (September 3rd  – 8th 2017). Details will be announced in due course.



List of people that attended the meeting:
1)      Prof. Sir William A. Wakeham (UK), Chairman
2)      Prof. Marc J. Assael (Greece), Secretary
3)      Prof. Akira Nagashima (Japan)
4)      Prof. Carlos A. Nieto de Castro (Portugal)
5)      Dr Eckard Bich (Germany)
6)      Prof. Christian Boned (France)
7)      Dr Fernando Caetano (Portugal)
8)      Prof. Joao M.N.A. Fareleira (Portugal)
9)      Prof. Josefa Fernandez (Spain)
10)     Prof. Andreas Fröba (Germany)
11)     Dr Guillaume Galliero (France)
12)     Prof. Ken Harris (Australia)
13)     Dr Robert Hellmann (Germany)
14)     Dr Marcia A. Huber (USA)
15)     Dr Arno Laesecke (USA)
16)     Prof. Maria Jose V. Lourenco (Portugal)
17)     Prof. Kenneth N. Marsh (Australia)
18)     Prof. Sergio E. Quinones-Cisneros (Mexico)
19)     Dr Bernd Rathke (Germany)
20)     Dr Nicolas Riesco (U.K.)
21)     Prof. J.P. Martin Trusler (UK)
22)     Prof. Velisa Vesovic (U.K.)
23)     Prof. Jiangtao Wu (P.R. China)

24)     Dr Konstantinos Antoniadis (Greece)
25)     Mr Jean-Patrick Bazile (France)
26)     Dr Ian Bell (Belgium)
27)     Prof. Shensham Bi (P.R. China)
28)     Prof. Eric May (Australia)
29)     Mr Johann-Philipp Crusius (Germany)
30)     Mr Joao Diogo (Portugal)
31)     Mr Dan Fang (P.R. China)
32)     Dr Tara Fortin (USA)
33)     Ms Kehui Gao (P.R. China)
34)     Mr Sebastian Herrmann (Germany)
35)     Mr Xiaozhen Hu (P.R. China)
36)     Mr Humaish Hussein (France)
37)     Dr Thoma Koller (Germany)
38)     Dr Enriqueta R Lopez (Spain)
39)     Dr Laurent Marmoret (France)
40)     Ms Efthimia Michailidou (Greece)
41)     Dr Sofia Mylona (Greece)
42)     Ms Evita Sykioti (Greece)
43)     Ms Yuxin Zheng (P.R. China)



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