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Mathematical modeling and analysis of Cucker-Smale ensemble in a temperature field : 온도장 아래에서 쿠커-스메일 앙상블의 수학적 모델링과 해석

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dc.contributor.advisor하승열-
dc.contributor.author민찬호-
dc.date.accessioned2018-11-12T00:58:06Z-
dc.date.available2018-11-12T00:58:06Z-
dc.date.issued2018-08-
dc.identifier.other000000151710-
dc.identifier.urihttps://hdl.handle.net/10371/143180-
dc.description학위논문 (박사)-- 서울대학교 대학원 : 자연과학대학 수리과학부, 2018. 8. 하승열.-
dc.description.abstractIn this thesis, we mainly discuss the Thermodynamic Cucker-Smale model

(TCS), a kind of the Cucker-Smale model, that is influenced by the internal

energy of the particles. The TCS model is constructed to satisfy the entropy

condition and other notable thermodynamic behaviors.

We prove that under certain initial conditions, a flocking behavior emerges

in TCS models, the fact from which we further draw the conclusion of the

uniform stability of the TCS models.

We also present mesoscopic and macroscopic versions of the TCS model :

kinetic TCS and hydrodynamic TCS models. Using stability and regularity,

we prove that the solution for each of these models exists for every time.

Also, we show that each of these models has similar flocking behaviors as

those of particle models. Furthermore, we show the well-posedness of each

model.
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dc.description.tableofcontentsAbstract

1 Introduction

2 Preliminaries

2.1 Kinetic and Hydrodynamic model

2.2 The SDV-TCS model

3 Flocking and stability of particle TCS model

3.1 Framework and main results

3.2 Asymptotic flocking estimate

3.2.1 Proof of Theorem 3.1.1

3.3 Uniform-in-time stability estimate

3.3.1 Uniform stability

3.3.2 Derivation of SDI for mechanical variables

3.3.3 Proof of Theorem 3.1.2

4 Uniform-in-time mean-_x000C_field limit of kinetic TCS model

4.1 Framework and main results

4.2 Uniform mean-_x000C_field limit

4.2.1 Proof of Theorem 4.1.1

4.2.2 Proofs of Corollary 4.1.1

5 Existence and flocking behavior of hydrodynamic TCS model

5.1 Framework and main results

5.2 A formal derivation of the HTCS model

5.2.1 Small diffusion velocity TCS model

5.3 Asymptotic flocking estimates

5.3.1 A priori estimates

5.3.2 Asymptotic flocking estimates

5.4 Local-in-time existence of classical solutions

5.4.1 Construction of approximate solutions

5.4.2 Solvability of the approximate system

5.4.3 Existence of an invariance set

5.4.4 Construction of local solution

5.5 A global-in-time existence of classical solutions

6 Conclusion and future works

Appendix A Proofs in chapter 4

A.1 A proof of Lemma 3.3.2

A.1.1 Spatial and velocity variations in `1-norm

A.1.2 Temperature variations in `1

A.2 A proof of Lemma 3.3.3

A.2.1 Spatial and velocity variations in `p-norm

A.2.2 Temperature variations in L`p-norm

Appendix B Proofs in chapter 5

B.1 A proof of Lemma 5.4.3

B.2 A proof of Lemma 5.4.4

B.3 A proof of Proposition 5.5.1

B.4 A proof of Proposition 5.5.2

Bibliography

Abstract (in Korean)
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dc.language.isoen-
dc.publisher서울대학교 대학원-
dc.subject.ddc510-
dc.titleMathematical modeling and analysis of Cucker-Smale ensemble in a temperature field-
dc.title.alternative온도장 아래에서 쿠커-스메일 앙상블의 수학적 모델링과 해석-
dc.typeThesis-
dc.description.degreeDoctor-
dc.contributor.affiliation자연과학대학 수리과학부-
dc.date.awarded2018-08-
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