International Journal of Thermal Sciences

International Journal of Thermal Sciences is published by Elsevier Masson SAS and is in Zone 2 of Engineering in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Heat Transfer and Optimization, Heat Transfer Mechanisms and Nanofluid Flow and Heat Transfer, together about 38.8% of its articles. Its main subfields are Mechanical Engineering and Computational Mechanics. (generated from OpenAlex topic counts and CAS ranking data)

Founded as Revue Générale de Thermique in 1962The International Journal of Thermal Sciences is devoted to the publication of original research papers concerned with fundamental studies on the physics of processes involving heat transfer and their coupling with mass transfer and/or fluid flow. The journal especially welcomes papers aiming at a better understanding of the coupling of local mechanisms and their interactions in larger scale systems.Papers submitted for publication may contain either experimental results, numerical simulations or discussions of models, and must present a significant scientific contribution.The fundamental subjects considered within the scope of the journal are:• Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of materials (heterogeneous, composites, biological,...) and fluid flow • Forced, natural or mixed convection in reactive or non-reactive media • Single or multi-phase fluid flow with or without phase change • Near-and far-field radiative heat transfer • Combined modes of heat transfer in complex systems (for example, plasmas, biological or geological systems,?) • Multiscale modelling.Manuscripts dedicated to stability analysis studies, or with developed codes, can be considered if their focus is on the physics of heat and mass transfer processes. Experimental validation for the actual problem or a related case is strongly encouraged. They are, however, outside the scope of our journal, if such papers are centered on mathematical developments.In all cases, the paper must present a physical discussion of the mathematical model and a clear justification of the underlying assumptions.Papers dedicated to applications in different fields of engineering or natural sciences may be considered provided that they analyze the coupling of heat transfer modes with other mechanisms and their influence on the system's behavior.The International Journal of Thermal Sciences will not accept papers with the following characteristics:• Studies which belong to already established specialized journals, such as computational techniques, combustion, thermodynamic cycles,? • Papers with purely descriptive or empirical content, • Mere applications of classical equations to complex fluids (e.g. colloidal suspensions) or to the complex combination of basic mechanisms (divided media, external forces,?) • Numerical simulations without a thorough validation of the code and convergence study, • Numerical results using commercial CFD codes, unless new insights into the physics of the process are presented. Even in such cases, experimental validation is mandatory for the actual problem. • Experimental reports without uncertainty analysis or presenting results without error margins, • Experimental or numerical studies which do not provide a physical interpretation of the observed behavior, • Studies presenting the global performance of industrial systems, • Papers on the characterization of materials, • Statistical techniques describing the process as a black box.Articles can be submitted in English or French. Before submitting a Review Article, the main author should contact one of the Editors-in-Chief.

From the journal's Aims & Scope

Research area (LetPub): Engineering, Mechanical

Editor-in-chief Chakravarthy BalajiPublisher website

Editorial board by country: 6 in mainland China (about 17%); most named France 7, Mainland China 6, Brazil 4, United States 3, Germany 3 (36 members with a country) Editorial board ↗Publisher website · 2026-10-01

CAS Journal Ranking

Database indexing

SCIEScopusLetPub

International journal early-warning lists: not listed in any editionLetPub

Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.

Impact

Impact factor

4.93LetPub · 2026-09-13

Impact factor (publisher)

4.9Publisher website · 2026-10-01

CiteScore 2026-06

10LetPub · 2026-09-13

CiteScore (publisher)

10Publisher website · 2026-10-01

SJR 2026-06

0.9LetPub · 2026-09-13

SNIP 2026-06

1.54LetPub · 2026-09-13

h-index

100LetPub · 2026-09-13

h-index

168OpenAlex · 2026-10-01

i10-index

5,787OpenAlex · 2026-10-01

2-year mean citedness

5.42OpenAlex · 2026-10-01

Self-citation rate

8.2%LetPub · 2026-09-13

Share of gold OA articles

11.09%LetPub · 2026-09-13

Volume

Articles per year

812LetPub · 2026-09-13

Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.

Figures by source

Average review time (community reports)

about 4.5 monthsLetPub · 2026-09-13

Average acceptance (community reports)

50%LetPub · 2026-09-13

Submission to first decision

2 daysPublisher website · 2026-10-01

First decision after review

36 daysPublisher website · 2026-10-01

Submission to acceptance

105 daysPublisher website · 2026-10-01

Acceptance to publication

6 daysPublisher website · 2026-10-01

Peer review

Single anonymous peer reviewPublisher website

Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.

A hybrid journal charges the APC only when the author chooses open access; publishing under the subscription model is usually free.

The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.

Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.

Publisher

Elsevier Masson SAS

Country or region

FRANCE

Language

English

Frequency

Monthly

ISSN

1290-0729

Electronic ISSN

1778-4166

Official links

• Journal homepage ↗LetPub
• Submission system ↗Publisher website
• Special issues ↗Publisher website