Computer Simulation in Low‐Temperature Plasma Physics: Future Challenges

Abstract

Computer simulations can be carried out with various aims. Perhaps the most challenging is prediction under conditions where experiments are difficult or inaccessible, especially when failure to predict adequately may have unhappy consequences. There is, probably, not much confidence at present in the capability of low‐temperature plasma physics simulations in such a context. Other fields have attempted to meet this challenge using a collection of techniques collectively known as “Verification and Validation,” or “V&V.” These are methods for enhancing confidence in the correctness and fidelity of computer simulations. This paper surveys these techniques and discusses their application to improvements of simulation capability in low‐temperature plasma physics.

Modelling of plasma-based dry reforming: how do uncertainties in the input data affect the calculation results?

“…A detailed uncertainty analysis and sensitivity study is therefore needed to reveal the impact of these uncertainties on the model predictions. Such an analysis was presented already by Turner for a He/O 2 mixture, [41]- [43] and for a CO 2 plasma in our group [44] . The current paper continues along these lines and extends the analysis to the plasma chemistry modelling of DRM in a DBD reactor.…”

“…Each of the parameters in the expressions for the rate coefficients (i.e., E a , A and B in the Arrhenius expression, or the parameters for the T e dependence) may bring some uncertainties. However, following the approach of Turner [41]- [43] , we only consider the uncertainty of the parameter A. The motivation is that for the rate coefficients derived from the energy-dependent cross sections, we can assume that the shape of the cross sections is better known than the absolute value, as is indeed often the case for data originating from beam measurements.…”

Fragmentation of thiophene and 3‐methyl‐2‐thiophenecarboxaldehyde by direct liquid phase low‐voltage discharges

“…Studies in a complex multidisciplinary area of low temperature plasma (LTP) provide new opportunities of synthesis at ambient temperature and pressure. One of the areas of research in the field of LTP is the study of processes in the multiphase plasma . Plasma‐liquid interaction is used in environmental remediation, disinfection and, more recently, for efficient synthesis of a wide range of products …”

“…One of the areas of research in the field of LTP is the study of processes in the multiphase plasma. [1][2][3][4] Plasma-liquid interaction is used in environmental remediation, [5,6] disinfection [7,8] and, more recently, for efficient synthesis of a wide range of products. [9][10][11] Water and electrolytes are used to study the direct liquidphase discharge method.…”

Special Issue on Numerical Modelling of Low‐Temperature Plasmas for Various Applications – Part I: Review and Tutorial Papers on Numerical Modelling Approaches

“…Essential for accurate modelling predictions is the verification and validation of the modelling results. This is carefully analysed by Turner (Dublin City University) who gives an overview of various techniques for this purpose and discusses their application to improvements of the simulation capability for low‐temperature plasmas . Furthermore, the accuracy of the models does not only depend on the modelling approach but also on the input data, like collision cross sections, reaction rate coefficients and transport coefficients of the plasma species.…”