**3. Future Research Direction**

Although considerable progress has been made on fire-induced smoke movement and control, much work remains to be conducted. Firstly, the limitations of CFD fire modelling as the widely used method, i.e., long-lasting and costly computation, are still significant [1,18], and AI (artificial intelligence) with high-performance computing will have wider applications. Secondly, in recent years, extreme weather (e.g., heavy rainfall [19,20]) is becoming increasingly prevalent with global warming. The boundary condition describing

**Citation:** Fan, C.; Qi, D. Preface: Special Issue on Fire-Induced Smoke Movement and Control. *Fire* **2023**, *6*, 142. https://doi.org/10.3390/ fire6040142

Received: 24 March 2023 Accepted: 27 March 2023 Published: 3 April 2023

**Copyright:** © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). *fire*

the extreme environment will not be disregarded when studying confined space fires. Last but not least, with the complex interconnected infrastructures (e.g., underground interconnected tunnel [5,9]) and green buildings [21] rapidly emerging, the characteristics of smoke transportation in these new buildings will need to be concerned in the future.

**Conflicts of Interest:** The authors declare no conflict of interest.
