CMEM 2015

17th International Conference on Computational Methods and Experimental Measurements


5 - 7 May 2015
Opatija, Croatia


CMEM 2015

The 12th International Conference on Computational Methods and Experimental Measurements, organised by the University of Naples “Federico II”, the University of Split and the Wessex Institute took place in Opatija, Croatia. The Co-Chairmen were Professors Giovanni Carlomagno (Italy), Dragan Poljak (Croatia) and Carlos A Brebbia (UK).

The meeting was sponsored by those organisations, the International Journal of Computational Methods and Experimental Measurements and the WIT Transactions on Modelling and Simulation. This well-established series of conferences has a long and distinguished history, having started in Washington DC in 1981. It has been held in many different locations throughout the world, lastly in La Coruña, Spain in 2013.

The papers contained in the conference book, as well as those from previous conferences since 1993, have been archived in the eLibrary of the Wessex Institute ( where they are permanently accessible to the international community. The success of the meeting is based on providing a unique forum for discussing the latest research on the interaction between computational methods and experimental measurements. The continuing progress in computer power and numerical techniques is providing an increasing number of computer tools which are currently influencing the solution of an ever-widening and sophisticated collection of engineering problems. As these simulations continue to grow and improve, the need for accurate validation arises, which can only be achieved through well planned and precise experiments. In addition, because of their continuous and innovative development, experimental methods are becoming more multifaceted and complex, so that both their control and data processing require powerful computer systems.

Opening of the Conference

Carlos A Brebbia opened the conference by welcoming the delegates in the name of his Institute and pointing out the work done by his Co-Chairmen, Professors Carlomagno and Poljak in making a success of this meeting. Carlos explained that the Wessex Institute is an institution dedicated to the transfer of knowledge. This is achieved not only through its conference cycle but also through activities as diverse as publications, training and research, and very specifically by supporting industry.

WIT has developed a set of software codes that are used for a number of applications, in fields as diverse as energy, mechanical engineering, aerospace and others. Research ensures their continuous development. The codes are supported in terms of maintenance, as well as training, an activity that has resulted in the Institute setting up an office in Boston to source the all-important USA industry.

The conferences – Carlos explained – gave rise to a series of publications which are archived in digital format in the website of the Institute publications, ie WIT Press. In addition to that, it publishes a substantial number of monographs and research books. The conference series is important for WIT – Carlos said – not only in terms of books, but also as a source of ideas for further research. This has also resulted in the launching of a number of international journals which cover new areas of interest, with emphasis on interdisciplinary topics.

Carlos ended by thanking the delegates for having come to Opatija and hoping that they will continue to collaborate with WIT.

Keynote Speakers

Prof Dragan Poljak welcomed the delegates to the conference pointing out the links of his research group at the University of Split with the Wessex Institute, stretching to nearly two decades. The cooperation has been in research and publications, as well as in organising conferences in Croatia and other places. Dragan ended by wishing the delegates a happy stay in Opatija, which is a unique location.

Following the above remarks, Prof Giovanni Carlomagno, also Co-Chair of the conference, discussed the history of jet impingement research. Giovanni referred to the difficulties of carrying out accurate experimental work, describing the different techniques used. His research has been extended to synthetic jets, which are those generated by a diaphragm or similar, providing a back and forward movement.

The talk presented a summary of the research done over the last 50 years or so, on the thermo-fluid-dynamics of impinging jets. Giovanni described, with some case studies, how tomographic PIV can be a very powerful technique in fluid dynamics.

Another keynote address was given by Prof Dragan Poljak who spoke on Electromagnetic compatibility issues related to wind turbines. Dragan pointed out that although wind turbines are an attractive source of energy, they are subjected to lightning strikes. This and other phenomena can result in electromagnetic disruption due to lack of compatibility.

Dragan then proceeded to discuss how to solve the problem of EM compatibility. This analysis has been carried out by simple wire structures. An example was presented demonstrating the type of result if a wind turbine is struck by lightning. He described how to reduce the transient impedance which can be done by geometrical changes, ie changing the number or length of the wires.

The last of the keynote speakers, Prof Edward Kansa, referred to the source of the problems presented in trying to find a maximum saddle or inflection point using FEM. Edward prefers to use radial basis function (RBF). There are many different forms of RBF and he referred specifically to the multiquadric styles which can be defined by a set of parameters. They can be used for solving differential and integral equations. They have very high accuracy rates and can be used with coarse discretization, no meshes and high coverage rates. The major disadvantage is the lack of convergence is certain cases.

Invited Presentations

There were a series of invited lectures by well-known colleagues, as follows:

“Jet impingement heat transfer: historical perspective and recent developments”, by Giovanni Carlomagno, University of Naples “Federico II”, Italy..

“Electromagnetic compatibility issues of wind turbines analysis and design”, by Dragan Poljak, University of Split, Croatia.

“Strong form collocation: input for optimization”, by Edward Kansa, Convergent Solutions, USA.

“Computational modelling of elastomeric materials to fit experimental data”, by Edoardo Menga, Airbus Operations SL, Spain.

“Transmitted field in the lossy ground from ground penetrating radar (GPR) dipole antenna”, by Vicko Doric, University of Split, Croatia.

“The Matrix Pencil method applied to smart monitoring and radar”, by Khalil El Khamlichi Drissi, Institut Pascal, France.

“Redesign of ZIGZAG Chair by fiber reinforced plastics: fusing product design and engineering”, by Hidetoshi Sakamoto, Kumamoto University, Japan.

“Mathematical models supporting the monitoring of Civitavecchia harbour (Rome)”, by Giuseppe Zappalà, National Research Council, Italy.

“Model of a system for the capacitive measurement of the height of liquids in metallic tanks”, by Roberto Callarotti, University of Turabo, Puerto Rico.

“Fatigue-induced grain growth and formation of slip bands in Cu processed by equal channel angular pressing”, by Masahiro Goto, Oita University, Japan.

“Characterization of the effect of brick-powder application in lime-based plasters”, by Robert Cerny, Czech Technical University, Czech Republic.

“Numerical simulation of coupled problems”, by Alen Harapin, University of Split, Croatia.

Conference Topics

The papers presented at CMEM were classified under the following topics::

  • Computational and experimental methods
  • Advances in computational methods
  • Computer modelling
  • Simulation and forecasting
  • Fluid flow
  • Materials characterisation
  • Heat transfer
  • Environmental modelling and applications
  • Air pollution modelling
  • Composite methods and structures
  • Applications in industry

Conference Dinner

The conference dinner started with a boat trip around the harbour and coastline of Opatija, showing the delegates what made this one of the most beautiful cities in Dalmatia. Participants were offered a selection of drinks, including some local specialities. Upon disembarkation, they proceeded to the Argonauti Restaurant located on the seafront, in one of the most elegant palaces of Opatija. The hotel, which used to be the holiday residence of a rich family at the time of the Austro-Hungarian Empire, conserves many of the unique period features, including some frescoes in the room where the banquet took place. The dinner consisted of a series of local specialities accompanied by regional wines, and the occasion was unique in creating a friendly atmosphere.

There was a meeting of the International Scientific Advisory Committee of the conference, followed by an Editorial Board meeting of the International Journal of Computational Methods and Experimental Measurements. A series of new ideas were put forward regarding the objectives and topics of the conference. The nomination of several new members for the ISAC was discussed as well as possible venues for the 2017 meeting. Carlos reported on the way the CMEM Journal is progressing. The new publication has attracted excellent papers and ought to be submitted for indexation shortly. Participants were encouraged to submit papers to the Journal to continue to improve the quality of its contents.

Closing of the Conference

The conference was closed by Carlos who thanked all the delegates for coming to Opatija and particularly to the Universities of Split and Naples “Federico II” for their support. The success of the meeting will lead to it being reconvened in 2017.

Conference Proceedings

The proceedings of CMEM 2015 – Computational Methods and Experimental Measurements XVII, 564pp (Print ISBN: 978-1-84564-922-7; eISBN: 978-1-84564-923-4) are available from WIT Press. Orders can be placed on the WIT Press web site at or by email: This email address is being protected from spambots. You need JavaScript enabled to view it., telephone: +44 (0) 238 029 3223 or fax: +44 (0) 238 029 2853.

Papers from the conference will also be hosted online at the WIT eLibrary in Volume 59 of WIT Transactions on Modelling and Simulation (ISSN: 1746-4064 Digital ISSN: 1743-355X). For more details visit the WIT eLibrary at

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CMEM 2015 - 5 - 7 May, 2015 Photos