The European Physical Journal Special Topics

Volume 235 / No 3 (April 2026)

Nanofluids in Solar Energy Applications

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Nanofluids in Solar Energy Applications

Regular Article

CFD simulation and optimization of the efficiency of a spiral tube under concentrated radiation by a parabolic concentrator p. 507

Khaled Mahdi, Khalida Bekrentchir, Nadir Bellel, Salah Boulaaras and Rashid Jan

Published online: 10 March 2025

DOI: 10.1140/epjs/s11734-025-01549-4

Regular Article

Natural convection of Newtonian nanofluid with temperature-dependent viscosity in a wavy trapezoidal cavity: a numerical study p. 573

K. Shandar, Satyananda Panda and E. Suresh Reddy

Published online: 21 February 2025

DOI: 10.1140/epjs/s11734-025-01526-x

Regular Article

Heat transfer in a dual wavy wall squared enclosure saturated by non-Newtonian fluid: a numerical investigation of mixed convection and application to concentrated solar power collectors (CSPC) p. 597

Thanaa Elnaqeeb, Shantanu Dutta and Nehad Ali Shah

Published online: 24 February 2025

DOI: 10.1140/epjs/s11734-025-01524-z

Regular Article

Entropy generation analysis of couple stress Casson fluid flow through non-permeable stretching channel p. 667

Kavita Jat, Kalpna Sharma, Prasun Choudhary and Pooja Soni

Published online: 19 February 2025

DOI: 10.1140/epjs/s11734-025-01525-y

Regular Article

A non-uniform approach to approximate the fractional Sturm–Liouville problem with generalized kernel p. 811

Eti Goel and Rajesh K. Pandey

Published online: 04 March 2025

DOI: 10.1140/epjs/s11734-025-01527-w

Open Access

Editorial

Nanofluids in solar energy applications p. 461

R. Sivaraj and Santo Banerjee

Published online: 01 April 2026

DOI: 10.1140/epjs/s11734-026-02277-z

Regular Article

Analysis of concentrating collector’s geometry with a passive solar tracking mechanism p. 465

Tangellapalli Srinivas, Rajan Kumar, Parmvir Singh and Aakash Kumar Nimesh

Published online: 18 July 2025

DOI: 10.1140/epjs/s11734-025-01746-1

Regular Article

Convective thermo-hydraulic phenomena of turbulent airflow through a solar rectangular channel with modern barriers and blocks p. 485

Shahul Hameed, Awani Bhushan, Sandip Saha, Susmay Nandi, S. Sudharson, S. C. Ram, Susmita Das, Shyam Sundar Santra and S. M. Hussain

Published online: 23 February 2026

DOI: 10.1140/epjs/s11734-026-02195-0

Regular Article

Enhancing thermal performance and entropy minimization in parabolic trough solar collectors with TiO₂-PAO nanolubricant: a RSM approach p. 529

V. Vinay Kumar and Ram Prakash Sharma

Published online: 09 March 2026

DOI: 10.1140/epjs/s11734-026-02234-w

Regular Article

Innovative Python-based numerical and semi-analytical study of / nanofluid performance in a parabolic trough solar collector p. 551

Shahryar Hajizadeh, Zahra Poolaei Moziraji, Bahram Jalili, Payam Jalili and Davood Domiri Ganji

Published online: 04 April 2026

DOI: 10.1140/epjs/s11734-026-02244-8

Regular Article

Buoyancy-driven convection and entropy generation analysis of Ostwald–de Waele nano-suspension in a trapezoidal porous domain with V-shaped baffles using multi-layer perceptron learning algorithm p. 619

Tahar Tayebi, Kashif Irshad, Marouan Kouki, Mohammed K. Al Mesfer, Mohd Danish, Amjad Ali Pasha, Ali J. Chamkha, M. K. Nayak and Ahmed M. Galal

Published online: 26 February 2026

DOI: 10.1140/epjs/s11734-026-02194-1

Regular Article

Machine learning and numerical approach of heat transfer properties of two different kinds of hybrid nanofluids flow in a U-shaped cavity p. 639

Shaik Jakeer, P. Durgaprasad, Sreedhara Rao Gunakala, Seethi Reddy Reddisekhar Reddy and H. Thameem Basha

Published online: 23 July 2025

DOI: 10.1140/epjs/s11734-025-01800-y

Regular Article

Stability analysis of Rayleigh–Benard convection on an inclined plane with an operative usage of solar energy in a biviscous Bingham fluid p. 687

Y. M. Gifteena Hingis, S. Sridhar, M. Muthtamilselvan and Ikhyun Kim

Published online: 25 June 2025

DOI: 10.1140/epjs/s11734-025-01744-3

Regular Article

An analysis of exothermic and endothermic reactions in nonlinear radiative flow of pulsating Carreau–Yasuda nanofluid with the influences of Dufour, Soret, and activation energy p. 707

J. Josuva and R. Hemadri Reddy

Published online: 24 February 2026

DOI: 10.1140/epjs/s11734-026-02196-z

Open Access

Regular Article

Heat transfer mechanism and irreversibility in power law fluid dynamics through converging/diverging channels with radiative effects p. 731

Shuguang Li, A. M. Obalalu, Pradeep Kaswan, Umair Khan and A. O. Balogun

Published online: 28 June 2025

DOI: 10.1140/epjs/s11734-025-01745-2

Regular Article

Comparative analysis di-hybrid, tri-hybrid, tetra-hybrid on bioconvective Sisko nanofluid over porous vertical cone/plate with thermal radiation, heat generation, viscous dissipation and chemical reaction p. 751

S. Siraj Nisha and Poulomi De

Published online: 24 June 2025

DOI: 10.1140/epjs/s11734-025-01743-4

Open Access

Regular Article

Computation of manganese ferrite/nickel ferrite ethylene glycol hybrid ferro-magnetic nanofluid stretching flow with radiative flux: applications in solar nano-coatings p. 785

M. M. Bhatti, O. Anwar Bég, C. M. Khalique, Tasveer A. Bég and S. Kuharat

Published online: 26 June 2025

DOI: 10.1140/epjs/s11734-025-01742-5

EPJ

The European Physical Journal Special Topics

Volume 235 / No 3 (April 2026)

Nanofluids in Solar Energy Applications

Nanofluids in Solar Energy Applications

CFD simulation and optimization of the efficiency of a spiral tube under concentrated radiation by a parabolic concentrator p. 507

Natural convection of Newtonian nanofluid with temperature-dependent viscosity in a wavy trapezoidal cavity: a numerical study p. 573

Heat transfer in a dual wavy wall squared enclosure saturated by non-Newtonian fluid: a numerical investigation of mixed convection and application to concentrated solar power collectors (CSPC) p. 597

Entropy generation analysis of couple stress Casson fluid flow through non-permeable stretching channel p. 667

A non-uniform approach to approximate the fractional Sturm–Liouville problem with generalized kernel p. 811

Nanofluids in solar energy applications p. 461

Analysis of concentrating collector’s geometry with a passive solar tracking mechanism p. 465

Convective thermo-hydraulic phenomena of turbulent airflow through a solar rectangular channel with modern barriers and blocks p. 485

Enhancing thermal performance and entropy minimization in parabolic trough solar collectors with TiO₂-PAO nanolubricant: a RSM approach p. 529

Innovative Python-based numerical and semi-analytical study of / nanofluid performance in a parabolic trough solar collector p. 551

Buoyancy-driven convection and entropy generation analysis of Ostwald–de Waele nano-suspension in a trapezoidal porous domain with V-shaped baffles using multi-layer perceptron learning algorithm p. 619

Machine learning and numerical approach of heat transfer properties of two different kinds of hybrid nanofluids flow in a U-shaped cavity p. 639

Stability analysis of Rayleigh–Benard convection on an inclined plane with an operative usage of solar energy in a biviscous Bingham fluid p. 687

An analysis of exothermic and endothermic reactions in nonlinear radiative flow of pulsating Carreau–Yasuda nanofluid with the influences of Dufour, Soret, and activation energy p. 707

Heat transfer mechanism and irreversibility in power law fluid dynamics through converging/diverging channels with radiative effects p. 731

Comparative analysis di-hybrid, tri-hybrid, tetra-hybrid on bioconvective Sisko nanofluid over porous vertical cone/plate with thermal radiation, heat generation, viscous dissipation and chemical reaction p. 751

Computation of manganese ferrite/nickel ferrite ethylene glycol hybrid ferro-magnetic nanofluid stretching flow with radiative flux: applications in solar nano-coatings p. 785

Conference announcements

EPJ

The European Physical Journal Special Topics

Volume 235 / No 3 (April 2026)

Nanofluids in Solar Energy Applications

Nanofluids in Solar Energy Applications

CFD simulation and optimization of the efficiency of a spiral tube under concentrated radiation by a parabolic concentrator p. 507

Natural convection of Newtonian nanofluid with temperature-dependent viscosity in a wavy trapezoidal cavity: a numerical study p. 573

Heat transfer in a dual wavy wall squared enclosure saturated by non-Newtonian fluid: a numerical investigation of mixed convection and application to concentrated solar power collectors (CSPC) p. 597

Entropy generation analysis of couple stress Casson fluid flow through non-permeable stretching channel p. 667

A non-uniform approach to approximate the fractional Sturm–Liouville problem with generalized kernel p. 811

Nanofluids in solar energy applications p. 461

Analysis of concentrating collector’s geometry with a passive solar tracking mechanism p. 465

Convective thermo-hydraulic phenomena of turbulent airflow through a solar rectangular channel with modern barriers and blocks p. 485

Enhancing thermal performance and entropy minimization in parabolic trough solar collectors with TiO2-PAO nanolubricant: a RSM approach p. 529

Innovative Python-based numerical and semi-analytical study of / nanofluid performance in a parabolic trough solar collector p. 551

Buoyancy-driven convection and entropy generation analysis of Ostwald–de Waele nano-suspension in a trapezoidal porous domain with V-shaped baffles using multi-layer perceptron learning algorithm p. 619

Machine learning and numerical approach of heat transfer properties of two different kinds of hybrid nanofluids flow in a U-shaped cavity p. 639

Stability analysis of Rayleigh–Benard convection on an inclined plane with an operative usage of solar energy in a biviscous Bingham fluid p. 687

An analysis of exothermic and endothermic reactions in nonlinear radiative flow of pulsating Carreau–Yasuda nanofluid with the influences of Dufour, Soret, and activation energy p. 707

Heat transfer mechanism and irreversibility in power law fluid dynamics through converging/diverging channels with radiative effects p. 731

Comparative analysis di-hybrid, tri-hybrid, tetra-hybrid on bioconvective Sisko nanofluid over porous vertical cone/plate with thermal radiation, heat generation, viscous dissipation and chemical reaction p. 751

Computation of manganese ferrite/nickel ferrite ethylene glycol hybrid ferro-magnetic nanofluid stretching flow with radiative flux: applications in solar nano-coatings p. 785

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Conference announcements

Enhancing thermal performance and entropy minimization in parabolic trough solar collectors with TiO₂-PAO nanolubricant: a RSM approach p. 529