Problem with figures in a two-column multicols environment

In the tex which is attached i use multicols{2} for two column text. Everything works properly until use begin{center} for table (in 589 line) or line 631 for figure. The unwanted space is created (as it is shown in the figure). How can i fix this problem? I don’t want to use twocolumn option in documentclass.

if i use begin{figure*} or begin{table*} the figure and table span in two column.I want to put table on top of single column.(the begin{figure} and begin{table} don’t work in multicol environment like twocolumn)

 begin{center} 
begin{LTR}
begin{tabular}{ccc}
toprule [.4pt] toprule [.4pt]
$m_1$       &  qquad qquad qquad $0.5$  
$m_2$       &    qquad qquad qquad  $0.4$  
$m_3$       &   qquad qquad qquad  $0.2$  
$m_4$       &   qquad qquad qquad  $0.1$  
$I_{c_1}$  &   qquad qquad qquad  $0.15$  
$I_{c_2}$  &  qquad qquad qquad  $0.1$  
$I_{c_3}$  & qquad qquad  qquad  $0.02$  
$I_{c_4}$  &   qquad qquad qquad  $0.05$  
$M_p$       &  qquad qquad qquad   $10*I _{3times 3}(kg) $  
$D_p$       &  qquad qquad qquad   $80*I _{3times 3}(kg) $  
$K_p$       &   qquad qquad qquad  $600*I _{3times 3}(kg) $  
bottomrule  [.4pt] bottomrule  [.4pt]
end{tabular}
 end{LTR}
 captionof {table}{پارامترهای مورد استفاده در شبیه‌سازی}   
end{center}