Keqin Su

Prof. Dr. Keqin Su

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Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 February 2019 in Asymptotic Analysis
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YQYuming Qin
Yuming Qin
KSKeqin Su
Keqin Su
This paper is concerned with the dynamics of 2D Navier–Stokes–Voight equations which govern an incompressible fluid flow. By virtue of energy estimates and compact embedding technique, we establish the existence of finite fractal dimensional global attractor for the 2D Navier–Stokes–Voight equations with a distributed delay.
14 June 2018 in Mathematical Methods in the Applied Sciences
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KSKeqin Su
Keqin Su
YQYuming Qin
Yuming Qin
30 December 2015 in Boundary Value Problems
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KSKeqin Su
Keqin Su
MZMingxia Zhao
Mingxia Zhao
JCJie Cao
Jie Cao
Under suitable hypotheses on the continuous delay, distributed delay, and the initial data in this paper, the large-time behavior for the 2D Navier-Stokes-Voigt equations with continuous delay and distributed delay on the Lipschitz domain is studied. The existence of pullback attractors in the non-smooth domain was obtained via verifying some pullback dissipation and asymptotical compactness for the continuous process.
9 February 2017 in Advances in Mathematical Physics
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KSKeqin Su
Keqin Su
JCJie Cao
Jie Cao
The third-order conditional Lie–Bäcklund symmetries of nonlinear reaction-diffusion equations are constructed due to the method of linear determining equations. As a consequence, the exact solutions of the resulting equations are derived due to the compatibility of the governing equations and the admitted differential constraints, which are resting on the characteristic of the admitted conditional Lie–Bäcklund symmetries to be zero.
1 January 2024 in Journal of Partial Differential Equations
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KSKeqin Su
Keqin Su
Xin-Guang YangXin-Guang Yang
Xin-Guang Yang
This paper is concerned with the pullback dynamics and robustness for the 2D incompressible Navier-Stokes equations with delay on the convective term in bounded domain. Under appropriate assumption on the delay term, we establish the existence of pullback attractors for the fluid flow model, which is dependent on the past state. Inspired by the idea in Zelati and Gal’s paper (JMFM, 2015), the robustness of pullback attractors has been proved via upper semi-continuity in last section. Navier-Stokes equations, pullback attractors, delay, upper semi-continuity. 35B40, 35B41, 35Q30, 76D03, 76D05 COPYRIGHT: © Global Science Press
1 January 2025 in Discrete and Continuous Dynamical Systems - S
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LZLingrui Zhang
Lingrui Zhang
XLXue-Zhi Li
Xue-Zhi Li
KSKeqin Su
Keqin Su
The existence of strong uniform attractors for second-order abstract non-autonomous dissipative systems has been extended to the weak and norm-to-weak uniform attractors. Based on the dynamic theory of non-autonomous dissipative systems, this paper is concerned with long-term asymptotic dynamics for 3D Benjamin-Bona-Mahony equations with less regular external forces. The weak uniform attractors for 3D Benjamin-Bona-Mahony equations with normal, temporally, and spatially regular external forces have been derived by using the spectrum theory of operators and an energy equation approach.