“…Global existence and uniqueness of solutions of the inviscid HMCO equation can be easily established following the same ideas as for the twodimensional Euler equations. Indeed, it was remarked in [10], and in [26], that (1.4), with F = β = 0, is equivalent to the two-dimensional Euler equations of incompressible inviscid fluid, where φ 0 plays the role of the stream function, ω = △ h φ 0 the vorticity and u = (− ∂φ0 ∂y , ∂φ0 ∂x ) is the velocity field. The existence and uniqueness of strong local solutions of (1.4) in H s (R 2 ), with initial data φ 0 ∈ H s (R 2 ), for s ≥ 4; and the existence of a weak global solution in H 2 (R 2 ), with initial data φ 0 ∈ H 2 (R 2 ), were established in [26].…”
Section: Introductionmentioning
confidence: 99%
“…Indeed, it was remarked in [10], and in [26], that (1.4), with F = β = 0, is equivalent to the two-dimensional Euler equations of incompressible inviscid fluid, where φ 0 plays the role of the stream function, ω = △ h φ 0 the vorticity and u = (− ∂φ0 ∂y , ∂φ0 ∂x ) is the velocity field. The existence and uniqueness of strong local solutions of (1.4) in H s (R 2 ), with initial data φ 0 ∈ H s (R 2 ), for s ≥ 4; and the existence of a weak global solution in H 2 (R 2 ), with initial data φ 0 ∈ H 2 (R 2 ), were established in [26]. The uniqueness of a global strong solution in H s (R 2 ), for s ≥ 4, was later established in [10].…”
The three-dimensional inviscid Hasegawa-Mima model is one of the fundamental models that describe plasma turbulence. The model also appears as a simplified reduced Rayleigh-Bénard convection model. The mathematical analysis the Hasegawa-Mima equation is challenging due to the absence of any smoothing viscous terms, as well as to the presence of an analogue of the vortex stretching terms. In this paper, we introduce and study a model which is inspired by the inviscid Hasegawa-Mima model, which we call a pseudo-Hasegawa-Mima model. The introduced model is easier to investigate analytically than the original inviscid Hasegawa-Mima model, as it has a nicer mathematical structure. The resemblance between this model and the Euler equations of inviscid incompressible fluids inspired us to adapt the techniques and ideas introduced for the two-dimensional and the three-dimensional Euler equations to prove the global existence and uniqueness of solutions for our model. Moreover, we prove the continuous dependence on initial data of solutions for the pseudo-Hasegawa-Mima model. These are the first results on existence and uniqueness of solutions for a model that is related to the three-dimensional inviscid Hasegawa-Mima equations.MSC Subject Classifications: 35Q35, 76B03, 86A10.
“…Global existence and uniqueness of solutions of the inviscid HMCO equation can be easily established following the same ideas as for the twodimensional Euler equations. Indeed, it was remarked in [10], and in [26], that (1.4), with F = β = 0, is equivalent to the two-dimensional Euler equations of incompressible inviscid fluid, where φ 0 plays the role of the stream function, ω = △ h φ 0 the vorticity and u = (− ∂φ0 ∂y , ∂φ0 ∂x ) is the velocity field. The existence and uniqueness of strong local solutions of (1.4) in H s (R 2 ), with initial data φ 0 ∈ H s (R 2 ), for s ≥ 4; and the existence of a weak global solution in H 2 (R 2 ), with initial data φ 0 ∈ H 2 (R 2 ), were established in [26].…”
Section: Introductionmentioning
confidence: 99%
“…Indeed, it was remarked in [10], and in [26], that (1.4), with F = β = 0, is equivalent to the two-dimensional Euler equations of incompressible inviscid fluid, where φ 0 plays the role of the stream function, ω = △ h φ 0 the vorticity and u = (− ∂φ0 ∂y , ∂φ0 ∂x ) is the velocity field. The existence and uniqueness of strong local solutions of (1.4) in H s (R 2 ), with initial data φ 0 ∈ H s (R 2 ), for s ≥ 4; and the existence of a weak global solution in H 2 (R 2 ), with initial data φ 0 ∈ H 2 (R 2 ), were established in [26]. The uniqueness of a global strong solution in H s (R 2 ), for s ≥ 4, was later established in [10].…”
The three-dimensional inviscid Hasegawa-Mima model is one of the fundamental models that describe plasma turbulence. The model also appears as a simplified reduced Rayleigh-Bénard convection model. The mathematical analysis the Hasegawa-Mima equation is challenging due to the absence of any smoothing viscous terms, as well as to the presence of an analogue of the vortex stretching terms. In this paper, we introduce and study a model which is inspired by the inviscid Hasegawa-Mima model, which we call a pseudo-Hasegawa-Mima model. The introduced model is easier to investigate analytically than the original inviscid Hasegawa-Mima model, as it has a nicer mathematical structure. The resemblance between this model and the Euler equations of inviscid incompressible fluids inspired us to adapt the techniques and ideas introduced for the two-dimensional and the three-dimensional Euler equations to prove the global existence and uniqueness of solutions for our model. Moreover, we prove the continuous dependence on initial data of solutions for the pseudo-Hasegawa-Mima model. These are the first results on existence and uniqueness of solutions for a model that is related to the three-dimensional inviscid Hasegawa-Mima equations.MSC Subject Classifications: 35Q35, 76B03, 86A10.
“…Indeed, Guo and Han [7] proved the global existence and uniqueness of solutions for (1.6). For other results concerning (1.6) see, e.g., Paumond [19], and Gao and Zhu [6].…”
We study the three-dimensional Hasegawa-Mima model of turbulent magnetized plasma with horizontal viscous terms and a weak vertical dissipative term. In particular, we establish the global existence and uniqueness of strong solutions for this model.
“…For the HM equation, we have had some mathematical results. For the initial value problem, the temporally local existence and uniqueness of the strong solution and the temporally global existence of the weak solution were proved by Guo and Han [13] and Paumond [40] independently in 2004, and the global existence of a strong solution was proved by Gao and Zhu [10] in 2005. The global-in-time existence and uniqueness of the solution and the existence of a global attractor to the initial boundary value problem for the generalized HM equation with periodic boundary condition were proved by Zhang and Guo for the twodimensional case [48] and the three-dimensional case [49].…”
In order to describe the resistive drift wave turbulence appearing in nuclear fusion plasma, the Hasegawa-Wakatani (HW) equations were proposed in 1983. We consider the two-dimensional HW equations, which have numerous structures (that is, they explain the branching phenomenon in turbulent and zonal flow in a two-dimensional plasma) and the generalized HW equations that include temperature fluctuation. We prove the global-in-time existence of a unique strong solution to both the HW equations and the generalized HW equations in a two-dimensional domain with double periodic boundary conditions.
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