Moving heat source induced dynamic response of biporous living tissues under three-phase-lags and spatiotemporal nonlocal effects
International Communications in Heat and Mass Transfer, cilt.178, sa.P6, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 178 Sayı: P6
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.icheatmasstransfer.2026.111999
- Dergi Adı: International Communications in Heat and Mass Transfer
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: Dual porosity, Fractional-order derivative, Hyperthermia, Klein–Gordon nonlocality, Living tissue, Phase lags
- Recep Tayyip Erdoğan Üniversitesi Adresli: Evet
Özet
This research investigates the dynamic thermo-mechanical response of biporous living tissues subjected to a moving heat source, aiming to provide a realistic prediction of heat transport and microstructural deformation during thermal treatments. By integrating fractional-order three-phase-lag (TPL) thermoelasticity with a novel spatiotemporal nonlocal Klein–Gordon (KG) framework, a comprehensive mathematical model is developed for a biological medium that accounts for blood perfusion and void-related microstructural effects. The spatiotemporal nonlocality is characterized by dynamical scalar kernels with internal length and time scales, and the governing equations are solved analytically using the Laplace transform tool, while the solution in the real space–time domain have been achieved adopting the Zakian’s method for the numerical inversion of the Laplace transform. Numerical simulations demonstrate that spatiotemporal nonlocality significantly modifies wave propagation; specifically, the internal length scale induces a stiffening effect on stresses, while the time scale acts as a temporal relaxation mechanism. Furthermore, the velocity of the moving heat source is identified as a critical factor in energy localization, whereas blood perfusion serves as a vital thermal regulator that suppresses peak temperatures and alleviates mechanical stress. The fractional-order TPL model provides a more sophisticated depiction of finite-speed thermal waves compared to the classical Pennes model, eliminating non-physical infinite propagation speeds. These findings are essential for optimizing medical procedures such as laser-induced hyperthermia and thermal ablation, allowing clinicians to accurately predict thermal penetration and stress localization to enhance the destruction of pathological tissue while preserving healthy surrounding structures. This work advances existing bio-thermoelastic literature by simultaneously accounting for memory-dependent heat transport, hierarchical porosity, and finite-speed thermal propagation under moving loads, providing a robust analytical framework for modern biomedical engineering applications.