WP Tax Query

$wp_query = new WP_Query(
		array('post_type' => 'post_type',
		'tax_query' => array(
        	  array(
            	   'taxonomy' => 'tax_type',
            	   'field' => 'id',
            	   'terms' => id number
       	          ),
    	        ),
    	        'order' => 'DESC',
		'orderby' => 'date',
                )
);