20mm

disk acceleration time ts (s)

30 mm

disk acceleration time ts (s)

Reynolds number

1

30

Reynolds number

1

30

3000

nontypable

nontypable

3000

nontypable

nontypable

4000

4000

5000

p

5000

6000

6000

p or r

7000

p

7000

p

r

8000

8000

p or s-

9000

9000

s-

10,000

10,000

11,000

11,000

nontypable

12,000

12,000

13,000

13,000

s-

14,000

14,000

15,000

p or s-

15,000

16,000

p or s-

16,000

17,000

17,000

18,000

18,000

19,000

19,000

20,000

20,000