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Make every element of an array displaystyle?

I am typing the following equations,

\begin{equation}
\left\{ \begin{array}{l}
L = {C_L}{\left( {\frac{{{k^3}}}{{\varepsilon _h^2}} + C_\eta ^2\frac{{{\nu ^{3/2}}}}{{\varepsilon _h^{1/2}}}} \right)^{{1 \mathord{\left/
 {\vphantom {1 2}} \right.
 \kern-\nulldelimiterspace} 2}}}\\
T = {\left( {\frac{{{k^2}}}{{\varepsilon _h^2}} + C_T^2\frac{\nu }{{{\varepsilon _h}}}} \right)^{{1 \mathord{\left/
 {\vphantom {1 2}} \right.
 \kern-\nulldelimiterspace} 2}}}\\
{T_{\lim }} = \frac{{0.6}}{{\sqrt 6 {C_\mu }\varsigma \sqrt {{S_{ij}}{S_{ij}}} }}
\end{array} \right.
\end{equation}

However, I found the line spacing and fonts in the formula is "automatically" reduced and resized by the compiler. :(

Could anyone tell me how to normalize it? Thanks

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marked as duplicate by David Carlisle, Marco Daniel, percusse, Tom Bombadil, Claudio Fiandrino Sep 6 '12 at 12:39

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2  
In addition to methods of making arrays be displaystyle it is generally better to use align from the amsmath package rather than using array to align equations –  David Carlisle Jul 26 '12 at 18:47
    
Thanks a lot, align method works!! –  Daniel Jul 26 '12 at 19:13
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1 Answer

up vote 4 down vote accepted

this should yield some improvement; it requires use of amsmath:

\begin{equation}
\left\{ \begin{aligned}
L &= {C_L}{\left( {\frac{{{k^3}}}{{\varepsilon _h^2}} + C_\eta ^2\frac{{{\nu ^{3/2}}}}{{\varepsilon _h^{1/2}}}} \right)^{{1 \mathord{\left/
 {\vphantom {1 2}} \right.
 \kern-\nulldelimiterspace} 2}}}\\
T &= {\left( {\frac{{{k^2}}}{{\varepsilon _h^2}} + C_T^2\frac{\nu }{{{\varepsilon _h}}}} \right)^{{1 \mathord{\left/
 {\vphantom {1 2}} \right.
 \kern-\nulldelimiterspace} 2}}}\\
{T_{\lim }} &= \frac{{0.6}}{{\sqrt 6 {C_\mu }\varsigma \sqrt {{S_{ij}}{S_{ij}}} }}
\end{aligned} \right.
\end{equation}
share|improve this answer
    
Yes, this works! Thanks a lot –  Daniel Jul 26 '12 at 19:13
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