Московский государственный университет им. М.В. Ломоносова - PowerPoint PPT Presentation

Download
1 / 60

  • 225 Views
  • Uploaded on
  • Presentation posted in: General

ЛАБОРАТОРИЯ МНОГОМАСШТАБНОГО МОДЕЛИРОВАНИЯ. Многомасштабное моделирование гетерогенных каталитических процессов на теплозащитных покрытиях космических аппаратов. В.Л. Ковалев. Московский государственный университет им. М.В. Ломоносова. Институт космических исследований РАН,

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Presentation

Московский государственный университет им. М.В. Ломоносова

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


4367163

..

. ..

,

. 11-13 2009


4367163

  • 2. :

  • 3.

  • 4.

  • 5.


4367163

J*q /Jq

1-kw=0 , 2-kw=3 m/s , 3-kw=10 m/s

Mesur


4367163

- (

  • ( )

- ( )

-


4367163

Scott, Kolodziej - Stewart

Zoby, , , ...

Phenomenological Models

Jumper, Willey, Bruno, Deutschmann, Dai, Kurotaki,

,

Billing, Cacciatore, Soyos, , ,

Gro, Holloway-Darling, Whitten-Yang, DePristo, , ,


4367163

:

Mesox


4367163

:

Space Shuttle

, , , , , ...

Scott, Kolodziej Stewart, Zoby...

D. A. Stewart and D. B. Leiser ;

Kolodziej Stewart


4367163

:

-

-

-


4367163

.. , .. , ..

: ( Y.C. Kim, M. Boudart)

:

( .. , .. ))

: -

: ( )

.. , .. , ..


4367163

.. , .. , ..

( )


Mesox

M. Balat-Pichelin, .. , A. . , A..

, Mesox

: N2, O2, N2*, O2*, O, Ar


4367163

-

<<>>

1-k =0, 2-k =3,5 m/s,3-k =

Curves 4-8:


4367163

.. , ..

Space Shuttle

OREX

1,2-Bruno NO NO;

3- NO ; 4,5 Kurotaki NO ,- .


4367163


4367163

Scott, Kolodziej - Stewart

Zoby, , , ...

Phenomenological Models

Jumper, Willey, Bruno, Deutschmann, Dai, Kurotaki,

,

Billing, Cacciatore, Soyos, , ,

Gro, Holloway-Darling, Whitten-Yang, DePristo, , ,


4367163

,

:


4367163

: , .

:

1. (i = 1, n)

2. (k = 1, N )

:

:

.. , ..


Md trajectories

MD Trajectories

: , .

.

0.82

,

.. , ..


B cristobalite

SiO2

b cristobalite

Ralph W.G. Wyckoff The crystal structure of the high temperature form of cristobalite (SiO2), American Journal of Science, Ser.5, Vol.9, 1925, pp.448-459

.. , ..


4367163

SiO2

SiO2

.. , ..


4367163

SiO2

SiO2

.. , ..


3c sic

3C-SiC

3C-SiC

.. , ..


4367163

.. , ..


Al 2 o 3

.., .., .., ..

Al2O3

Al2O3.


U r o 3 p al 4 o 6

.., .., .., ..

U(R) O(3P) Al4O6


4367163

, O (3P) Al4O6, - Al2O3.


4367163

.., .., .., ..


4367163

1

  • , .

  • , .


4367163

2

:

  • ,

  • , ,

  • . .


4367163

3

  • , MD Trajectory.

  • MD Trajectory , . .. .

  • SiO SiC Al2O3.

  • , . .


4367163

Mars Miniprobe

.. , .. , .. .

CO2

MRSO


4367163

.. , ..


4367163

.. , ..


4367163

.. , ..


4367163

.. , ..

2.7 , 2.8


4367163

- -

.

.., ..

, , , , , .

, .

, ( ) , . ( ). (Purdue University, ). , - .


4367163

!


4367163

-

.., .., ..


4367163


4367163

r

.., ..

n

n

n

T=80K

P=12atm

T=80K

P=40atm

T=80K

P=60atm

r

r

r

n

T=298K

P=90atm

r


4367163

Expert (ESA)


4367163

.. , ..


4367163

.. , ..

-

during

-

((1999),Billing (2000)


4367163

SiO2

, .

.. , ..


4367163

, . .

2 3% .

, .


4367163

(10,10)

n

m

(10,10)


4367163

1.4

x1

x2

(n,n)

.., ..

Y. Ye, C.C. Ahn, C. Witham, B. Fultz, J. Liu, A.G. Rinzler, D. Colbert, K.A. Smith, R.E. Smalley

(10,10)

6-12

10 50

6


4367163

-

.., ..

:

H2

C H2

()

.

H2

H2 H2

H2 .

C .


4367163

x1

-

/k, K , A

H2 H2 36.9 2.928

C H2 32.05 3.179

x2

Ea / k = 428 K

Ea

H2

.., ..

r

r

x1

x2

x1

x2

r


4367163

H2

.., ..

- 8-4, :


4367163

z

x

y

.., ..

:

- ,

- , i- j-

  • :

  • :

,


4367163

H2

H2

H2

H2

H2

H2

.., ..

, . , .

:

.., ..


4367163

.., ..

1

2


4367163

r

.., ..

n

n

n

T=80K

P=12atm

T=80K

P=40atm

T=80K

P=60atm

r

r

r

n

T=298K

P=90atm

r


4367163

.., ..

, .

, , .

=>


4367163

.., ..

1 - ,

2 -

3 - ,

4 - Y. Ye, C.C. Ahn, C. Witham, B. Fultz, J. Liu, A.G. Rinzler, D. Colbert, K.A. Smith, R.E. Smalley. (1999)

5 - N. Hu, X. Sun, A. Hsu. (2005)

6 - Lawrence J, Xu Gu (2004)

T=80K

T=298K


4367163

.., ..

0.8

1.0

1.5 V0

0

1.0Tw

0.9 Tw


4367163

.., ..


4367163

.., ..

(Bird


  • Login