To Date : July 12, 2000

INDIAN INSTITUTE OF TECHNOLOGY MADRAS

CHENNAI – 600 036, INDIA
Fax – 91 – 44 – 2257 8470 / 2257 0509

Thanking you ----------yours sincerely – Dr. S. Roy

Maths. Deptt.

I.I.T. Madras

Chennai – 600 036

The above paper is a useful contribution. I recommend that the paper to be accepted for publication as a short communication provided the author(s) comply with the points listed below and agree to modify the manuscript accordingly:

3. 
   Section 1. Introduction should be made very short and refs 2, 12 and 13 can be removed.
   
4. 
   Section 2. Basic equations should be removed.
   
5. 
   Sections 3. & 4. are to be made as one section to shorten the manuscript.
   
6. 
   Figs. 1(a) and 1(b) should be removed.
   
7. 
   Table 1 and Table 2 should be removed while the author(s) can mentioned that “Results are compared for constant property, M = m = 0 and Pr = 0.71 with Kelson and Desseaux [10] and comparison table is not presented here for the sake of brevity”, which should be included in the first paragraph of the Section “ 4. Results and discussion”
   
8. 
   Results and discussion section is needed to make short. Figures.4 and 5 should be restricted with only two parts (a)-(b) instead of four parts (a)-(d) by combining the curves.
   
9. 
   Standard notations Pr, Nu and C_p can be used instead of P_r , N_u and c_p .
   
10. 
    Reference numbers should appear in ascending order in the manuscript.
    
11. 
    Corrections as mentioned in the manuscript should be taken care while making the manuscript short.
    

Author wants to solve a free convection flow under Boussinesq approximation as mentioned in the section “ Mathematical Analysis” but governing equation (2) do not contain the buoyancy force terms due to temperature and concentration differences. Further, boundary conditions show the presence of external free stream flow which means a mixed convection flow. As a whole, the formulation of equations is completely wrong. After correct formulation of equations, the transformations may not reduce the system of partial differential equations to a set of ordinary differential equations. Even then the problem would be a very simple one and may be considered as a simple extension like exercise of the recent book entitled “Convective Heat Transfer” by I. Pop and D.B. Ingham published in the year 2001.

I strongly feel that the problem would not be of any interest in IJHMT and this paper can be rejected for publication in IJHMT.

To Date: 2^nd December, 2004

Professor E. Suhubi,

Associate Editor, IJES.

Dear Sir,

I am sending herewith three copies of our paper entitled “Natural convection in a square cavity filled with a porous medium: Effects of various thermal boundary conditions” by Tanmay Basak, S. Roy and T. Paul for the consideration of it’s publication in “International Journal of Engineering Science”.

Thanking you,
yours sincerely

(SATYAJIT ROY)

Professor E. Suhubi Associate Editor, IJES Department of Mathematics,

Yeditepe University, 26 Agustos Yerlesimi, Kayisdagi Caddesi 34755, Kayisdagi, Erenkoy, Istanbul, TURKEY

REGISTERED AIR-MAIL

DR. SATYAJIT ROY

ASSOCIATE PROFESSOR

DEPARTMENT OF MATHEMATICS

INDIAN INSTITUTE OF TECHNOLOGY MADRAS

CHENNAI – 600 036

MA-202 : Dr. Satyajit Roy

Sl.No.	Roll No.	Quiz-I	Quiz-II	End Sems.	Total	Grade	Attendence
1.	CH03B001	09	18				9
2.	CH03B003	12	17				H
3.	CH03B005	08	08				8
4.	CH03B007	18	20				H
5.	CH03B008	15	18				H
6.	CH03B009	14	08				9
7.	CH03B010	13	13				H
8.	CH03B012	12	11				H
9.	CH03B013	13	18				H
10.	CH03B016	06	08				9
11.	CH03B017	08	20				8
12.	CH03B020	08	11				8
13.	CH03B021	08	17				H
14.	CH03B022	12	19				H
15.	CH03B023	05	13				8
16.	CH03B025	12	18				8
17.	CH03B026	06	08				9
18.	CH03B027	05	13				9
19.	CH03B029	04	07				H
20.	CH03B030	14	15				9
21.	CH03B031	04	13				9
22.	CH03B033	05	12				9
23.	CH03B034	14	17				H
24.	CH03B035	13	17				H
25.	CH03B036	06	11				8
26.	CH03B037	11	17				H
27.	CH03B038	15	11				9
28.	CH03B039	10	06				8
29.	CH03B040	17	16				H
30.	CH03B041	07	11				9
31.	CH03B042	13	13				8
32.	CH03B044	18	14				H
33.	CH03B045	10	12				H
34.	CH03B046	12	13				9
35.	CH03B047	13	17				H
36.	CH03B048	04	14				H
37.	CH03B049	13	16				H
38.	CH03B050	20	18				H
39.	CH03B053	15	20				H
40.	CH03B054	10	16				H
41.	CH03B055	16	18				H
42.	CH03B056	12	11				H
43.	CH03B058	07	17				H
44.	CH03B059	11	17				H
45.	CH03B060	12	19				H
46.	CH03B061	15	14				H
47.	CH03B062	18	19				H
48.	EE03B015	09	16				8
49.	EE03B110	05	09				8
50.	EE03B113	09	16				8
51.	EE03B119	17	17				8
52.	EE03B120	07	17				H
53.	EE03B122	06	16				9
54.	EE01B002	02	06				8
55.	EE01B003	10	14				8
56.	EE01B004	03	04				8
57.	EE01B007	03	00				8
58.	EE01B009	06	15				8
59.	EE01B010	07	07				8
60.	EE01B014	06	11				8
61.	EE01B033	07	07				8
62.	EE01B041	05	14				8
63.	EE01B045	02	02				8
64.	EE01B050	03	04				8
65.	EE01B075	12	08				8
66.	EE01B077	06	08				8
67.	EE01B082	08	13				8
68.	EE01B088	04	15				8
69.	EE01B090	11	15				8
70.	EE00173	03	03				8
71.	ME00310	02	00				8

INDIAN INSTITUTE OF TECHNOLOGY MADRAS

DEPARTMENT OF MATHEMATICS
The committee in-charge of the Department Library is reconstituted with the following members as per HOD’s letter dated 16^th August, 2005:

1.	Dr. Satyajit Roy	Faculty in – charge
2.	Ms. Pallavi Mahale	Ph.D. Scholar
3.	Ms. S. Lavanya	Ph.D. Scholar
4.	Mr. Sankar Raj	Ph.D. Scholar
5.	Mr. G. Ramesh	Ph.D. Scholar
6.	Mr. E. Natarajan	Ph.D. Scholar

This committee will continue to function from 22^nd August, 2005 until further notification.

(Dr. Satyajit Roy)

1. 
   Copy to H.O.D.