Correction: Alshehri et al. Unsteady Convective MHD Flow and Heat Transfer of a Viscous Nanofluid across a Porous Stretching/Shrinking Surface: Existence of Multiple Solutions. Crystals 2021, 11, 1359

Nawal A. Alshehri; Awatef Abidi; Muhammad Riaz Khan; Yanala Dharmendar Reddy; Saim Rasheed; Elham Alali; Ahmed M. Galal

doi:10.3390/cryst13071083

,

and

¹

Department of Mathematics and Statistics, College of Science, Taif University, Taif 21944, Saudi Arabia

²

Physics Department, College of Sciences, King Khalid University, Abha 61421, Saudi Arabia

³

Research Laboratory of Metrology and Energy Systems, National Engineering School, Energy Engineering Department, University of Monastir, Monastir 5000, Tunisia

⁴

Higher School of Sciences and Technology of Hammam Sousse, Sousse University, Sousse 4002, Tunisia

Crystals2023, 13(7), 1083;https://doi.org/10.3390/cryst13071083

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We ought to correct the misprinted terms in our published paper ‘Unsteady Convective MHD Flow and Heat Transfer of a Viscous Nanofluid across a Porous Stretching/Shrinking Surface: Existence of Multiple Solutions’ [Crystals 2021, 11, 1359]. All the important outcomes of the published paper are correct, apart from the two existing misprints. As a result of these errata, we have introduced the right terms.

(1): The sentence, “which are assumed to be varying from a stagnation point, respectively, represented by $U_{w} (x, t) = \frac{a x}{1 - δ t}$ and $U_{e} (x, t) = \frac{b x}{1 - δ t}$ . where a, b and δ are positive constant. The dimension of a and b is t⁻¹…”, in line 9–10 of the section Mathematical Modelling of Ref. [1], should be replaced with “are assumed to be represented by $U_{w} (x, t) = \frac{a x}{1 - δ t}$ and $U_{e} (x, t) = 0$ respectively, where a is positive constant. The dimension of a is t⁻¹…”.
(2): The fourth boundary condition $f^{'} (η) = 1$ in Equation (12) of Ref. [1] should be replaced with $f^{'} (η) = 0$ .

Reference

Alshehri, N.A.; Abidi, A.; Khan, M.R.; Reddy, Y.D.; Rasheed, S.; Alali, E.; Galal, A.M. Unsteady convective MHD flow and heat transfer of a viscous nanofluid across a porous stretching/shrinking surface: Existence of multiple solutions. Crystals 2021, 11, 1359. [Google Scholar] [CrossRef]

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© 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/).

Correction: Alshehri et al. Unsteady Convective MHD Flow and Heat Transfer of a Viscous Nanofluid across a Porous Stretching/Shrinking Surface: Existence of Multiple Solutions. Crystals 2021, 11, 1359

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