How to evaluate an equation with multiple points for a variable.

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aquiano
aquiano 2016 年 9 月 5 日
コメント済み: Thorsten 2016 年 9 月 8 日
I have RE = V*D/NU and another equation C = 3.*RHOBAR/(4.*D) both variables RE and C appear in other equations, which will eventually end up in a plot. I want set multiple values for D. How do I solve this?
If I use D=[.1 .05 .001] I get an error stating Matrix Dimensions must agree
  2 件のコメント
KSSV
KSSV 2016 年 9 月 7 日
What are V, D, RHOBAR? constants? I think NU is poisons ratio and RHOBAR is density. What is V?
Thorsten
Thorsten 2016 年 9 月 8 日
Please post your code in text form, not as an image, such that we can run it.

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回答 (1 件)

Thanigaivel Raja T
Thanigaivel Raja T 2016 年 9 月 8 日
編集済み: Thanigaivel Raja T 2016 年 9 月 8 日
Make sure you have placed dot before operators for vector variables in your reynolds number RE, C and in equation containing RE and C.
In general,
* % matrix multiply
.* %scalar multiply
/ % matrix divide
./ % scalar divide
^ % exponentiation
.^ % element-by-element exponentiation

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